OE Quality
60-Day Returns

Dorman 785-422 Pipe Plug
Dorman 785-422 Brass Pipe Plug
Dorman 785-422 is a brass 1/4 in. MNPT pipe plug built to match the original equipment plug for diameter, thread pitch, and head type. It is engineered for a reliable seal in service applications where leak-free performance and corrosion resistance matter.
- Brass construction for corrosion resistance
- 1/4 in. MNPT thread size with coarse 16 TPI thread pitch
- Hex head design for straightforward removal and tightening
- OE-style dimensions for a direct replacement approach
- Standard-grade threaded pipe plug for service and repair use
OE-Style Fit and Seal
This pipe plug is designed around the original equipment dimensions so the thread diameter, pitch, and head style align with the factory-style opening. The brass material supports long service life in demanding automotive and service environments, while the threaded design helps maintain a secure, leak-resistant closure. Dorman 785-422 is a practical choice for restoring a sealed port on vehicles such as Buick Century, Pontiac Grand Prix, and Chevrolet Camaro applications listed below.
This part cross-references Monroe Shocks & Struts (e.g., 071870, 209400) for the same application.
Vehicle Fitment
- Fits 1989-1993 Buick Century, N/A. Also fits 1984-1985 Buick Century, N/A and 1975-1981 Buick Century, N/A.
- Fits 1989-1993 Buick Skylark, N/A and 1975-1979 Buick Skylark, N/A.
- Fits 1992-1993 Oldsmobile Achieva, N/A.
- Fits 1984-1993 Oldsmobile Cutlass Ciera, N/A and 1987-1993 Oldsmobile Cutlass Cruiser, N/A.
- Fits 1992-1993 Pontiac Grand Am, N/A and 1979 Pontiac Grand Am, N/A.
- Fits 1990-1992 Chevrolet Camaro, N/A and 1980-1981 Chevrolet Camaro, N/A.
- Fits 1990-1992 Chevrolet Cavalier, N/A, Corsica, N/A, and Lumina, N/A.
- Fits 1990-1992 Pontiac Firebird, N/A and 1977-1981 Pontiac Firebird, N/A.
- Fits 1989-1992 Pontiac Grand Prix, N/A and 1978-1987 Pontiac Grand Prix, N/A.
- Fits 1991-1992 Pontiac Sunbird, N/A and 1976-1980 Pontiac Sunbird, N/A.
- Fits 1989-1991 Oldsmobile Cutlass Calais, N/A and 1978-1984 Oldsmobile Cutlass Calais, N/A.
- Fits 1988-1991 Pontiac 6000, N/A and 1990 Chevrolet Celebrity, N/A.
- Fits 1985-1988 Oldsmobile 98, N/A and 1981-1983 Oldsmobile 98, N/A.
- Fits 1977-1988 Oldsmobile Delta 88, N/A.
- Fits 1986-1988 Oldsmobile Toronado, N/A and 1981-1984 Oldsmobile Toronado, N/A.
- Fits 1980-1988 Pontiac Bonneville, N/A.
- Fits 1985-1987 Oldsmobile Cutlass Salon, N/A and 1978-1980 Oldsmobile Cutlass Salon, N/A.
- Fits 1977-1987 Oldsmobile Cutlass Supreme, N/A.
- Fits 1976-1985 Buick LeSabre, N/A, 1975-1985 Buick Regal, N/A, and 1979-1985 Buick Riviera, N/A.
- Fits 1980-1984 Chevrolet Caprice, N/A, 1978-1984 Chevrolet El Camino, N/A, 1980-1984 Chevrolet Impala, N/A, and 1978-1984 Chevrolet Monte Carlo, N/A.
- Fits 1984 Pontiac Parisienne, N/A and 1978-1983 Chevrolet Malibu, N/A.
- Fits 1977-1981 Oldsmobile Cutlass, N/A, Pontiac Catalina, N/A, Pontiac Grand LeMans, N/A, and Pontiac LeMans, N/A.
- Fits 1975-1980 Buick Skyhawk, N/A, 1980 Chevrolet Monza, N/A, 1975-1980 Oldsmobile Starfire, N/A, 1977-1979 Oldsmobile Omega, N/A, and 1977-1979 Pontiac Phoenix, N/A.
Common Uses
- Sealing unused threaded ports in engine, cooling, or service-related systems
- Replacing a damaged or corroded pipe plug during repair work
- Restoring a proper seal where a worn plug is causing seepage
- Matching an OE-style brass plug for maintenance on classic GM vehicles
Installation Notes
Verify the thread size, pitch, and head style before installation. Clean the threaded opening thoroughly, start the plug by hand to avoid cross-threading, and tighten with the correct hex tool size. Use appropriate thread sealant only if required by the service procedure for the application.
Quality Assurance
Dorman manufactures this pipe plug as a direct-fit service part with corrosion-resistant brass construction and OE-matched dimensions for dependable sealing performance. Part number 785-422 is built for consistent fitment across the listed Buick, Oldsmobile, Pontiac, and Chevrolet applications.
| Brand | Dorman |
|---|---|
| Part Number | 785-422 |
| Color | Brass |
| Depth | 0.5 |
| Friction Material Thickness | Brass |
| Grade | Standard |
| Head Drive Type | Hex |
| Head Tool Size | 0.56 |
| Heat Hardened | No |
| Inside Or Outside Thread | Outside |
| Material | Brass |
| Outer Diameter (in) | 0.53 In |
| Overall Length (In) | 0.64 in |
| Package Contents | 1/4 in MNPT Pipe Plug |
| SAE or Metric | SAE |
| Thread Diameter | 0.53 |
| Thread Size | 1/4 In; MNPT |
| Thread Type | Coarse |
| Threaded | Yes |
| Threads Per Inch | 16 |
| Zinc Coated | No |
This part fits 280 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1993 | Buick | Century | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1993 | Buick | Skylark | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1993 | Oldsmobile | Achieva | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1993 | Oldsmobile | Cutlass Ciera | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1993 | Oldsmobile | Cutlass Cruiser | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1993 | Pontiac | Grand Am | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Buick | Century | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Buick | Skylark | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Chevrolet | Camaro | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Chevrolet | Cavalier | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Chevrolet | Corsica | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Chevrolet | Lumina | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Oldsmobile | Achieva | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Oldsmobile | Cutlass Ciera | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Oldsmobile | Cutlass Cruiser | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1992 | Pontiac | Firebird | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Pontiac | Grand Am | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1992 | Pontiac | Sunbird | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Buick | Century | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Buick | Skylark | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Chevrolet | Camaro | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Chevrolet | Cavalier | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Chevrolet | Corsica | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Chevrolet | Lumina | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Oldsmobile | Cutlass Calais | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Oldsmobile | Cutlass Ciera | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Oldsmobile | Cutlass Cruiser | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1991 | Pontiac | 6000 | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Pontiac | Firebird | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1991 | Pontiac | Sunbird | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Buick | Century | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Buick | Skylark | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Chevrolet | Camaro | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Chevrolet | Cavalier | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Chevrolet | Celebrity | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Chevrolet | Corsica | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Chevrolet | Lumina | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Oldsmobile | Cutlass Calais | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Oldsmobile | Cutlass Ciera | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Oldsmobile | Cutlass Cruiser | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Pontiac | 6000 | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Pontiac | Firebird | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1990 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Buick | Century | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Buick | Skylark | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Oldsmobile | Cutlass Calais | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Oldsmobile | Cutlass Ciera | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Oldsmobile | Cutlass Cruiser | 3.3L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Pontiac | 6000 | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1989 | Pontiac | Grand Prix | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Oldsmobile | 98 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Oldsmobile | Cutlass Ciera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Oldsmobile | Cutlass Cruiser | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Oldsmobile | Toronado | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Pontiac | 6000 | 3.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1988 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | 98 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | Cutlass Ciera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | Cutlass Cruiser | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | Cutlass Salon | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Oldsmobile | Toronado | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1987 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Oldsmobile | 98 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Oldsmobile | Cutlass Ciera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Oldsmobile | Cutlass Salon | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Oldsmobile | Toronado | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1986 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Oldsmobile | 98 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Oldsmobile | Cutlass Ciera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Oldsmobile | Cutlass Salon | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1985 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | LeSabre | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | Regal | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Buick | Riviera | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Chevrolet | Caprice | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Chevrolet | Impala | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Oldsmobile | Cutlass Ciera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Oldsmobile | Toronado | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1984 | Pontiac | Parisienne | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Buick | LeSabre | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Buick | Regal | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Buick | Riviera | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Chevrolet | Caprice | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Chevrolet | Impala | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Chevrolet | Malibu | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Oldsmobile | 98 | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Oldsmobile | Cutlass Cruiser | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Oldsmobile | Toronado | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1983 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Buick | LeSabre | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Buick | Regal | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Buick | Riviera | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Chevrolet | Caprice | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Chevrolet | Impala | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Chevrolet | Malibu | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Oldsmobile | 98 | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Oldsmobile | Cutlass Cruiser | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Oldsmobile | Toronado | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Pontiac | Bonneville | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1982 | Pontiac | Grand Prix | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | Century | 4.3L | V8 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | LeSabre | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | Regal | 4.3L | V8 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Buick | Riviera | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Chevrolet | Camaro | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Chevrolet | Caprice | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Chevrolet | Impala | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Chevrolet | Malibu | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | 98 | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | Cutlass | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | Cutlass Cruiser | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Oldsmobile | Toronado | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Pontiac | Catalina | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Pontiac | Firebird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Pontiac | Grand LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1981 | Pontiac | LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | Century | 4.3L | V8 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | LeSabre | 4.1L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | Regal | 4.3L | V8 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Buick | Skyhawk | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1980 | Chevrolet | Camaro | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Chevrolet | Caprice | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Chevrolet | Impala | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Chevrolet | Malibu | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Chevrolet | Monza | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Cutlass | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Cutlass Cruiser | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Cutlass Salon | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Oldsmobile | Starfire | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | Bonneville | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | Catalina | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | Firebird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | Grand LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1980 | Pontiac | Sunbird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | Century | 3.2L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | Regal | 3.2L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | Riviera | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Buick | Skyhawk | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1979 | Buick | Skylark | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Chevrolet | Malibu | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Cutlass | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Cutlass Salon | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Omega | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Oldsmobile | Starfire | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Catalina | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Firebird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Grand Am | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Grand LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Phoenix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1979 | Pontiac | Sunbird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Buick | Century | 3.2L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Buick | Regal | 3.2L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Buick | Skyhawk | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1978 | Buick | Skylark | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Chevrolet | El Camino | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Chevrolet | Malibu | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Cutlass | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Cutlass Calais | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Cutlass Salon | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Omega | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Oldsmobile | Starfire | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | Catalina | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | Firebird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | Grand LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | Grand Prix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | Phoenix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1978 | Pontiac | Sunbird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Buick | Skyhawk | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1977 | Buick | Skylark | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Oldsmobile | Cutlass | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Oldsmobile | Cutlass Supreme | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Oldsmobile | Omega | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Oldsmobile | Starfire | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Pontiac | Catalina | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Pontiac | Firebird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Pontiac | Grand LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Pontiac | LeMans | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Pontiac | Phoenix | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1977 | Pontiac | Sunbird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1976 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1976 | Buick | LeSabre | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1976 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1976 | Buick | Skyhawk | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1976 | Buick | Skylark | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1976 | Oldsmobile | Starfire | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1976 | Pontiac | Sunbird | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1975 | Buick | Century | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1975 | Buick | Regal | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1975 | Buick | Skyhawk | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. | ||
| 1975 | Buick | Skylark | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
| 1975 | Oldsmobile | Starfire | 3.8L | V6 | N/A | Brass Pipe Plug to be used as required, packaged in Clamshell packaging type. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.