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Dorman 674-276 Exhaust Manifold - Left
| Brand | Dorman 674-276 |
|---|---|
| Position | Left |
| Color | Natural |
| Gasket Or Seal Included | Yes |
| Grade Type | Regular |
| Heat Shield Included | No |
| Material | Cast Iron |
| Mounting Hardware Included | Yes |
| Package Contents | Exhaust Manifold; 1 Manifold Gasket; 2 Studs; 2 Nuts |
| Port Shape | Square |
| Fits | Chevrolet, GMC, Pontiac, Buick, and Oldsmobile · 67 vehicles |
OE-style replacement. Precision-engineered to match original fit and function.
Cast iron construction. Durable material built for dependable exhaust service.
Complete repair kit. Includes gaskets and downpipe hardware for installation.
Cross-references Nissens 101246, 651266 and 14007400 for the same application. See all 3.
Exhaust Manifold for Left-Side Repair
This Dorman exhaust manifold is engineered to match the fit and function of the original part on specified vehicles. Built from cast iron with a natural finish, it is a direct repair solution for left-side exhaust service on select Chevrolet, Pontiac, Buick, and Oldsmobile applications.
Part number 674-276 includes the manifold gasket and downpipe hardware needed for a complete repair. It is a practical OE-style replacement for vehicles such as the Chevrolet Caprice, Monte Carlo, Impala, and Malibu, as well as Pontiac Grand Prix and Buick Regal applications.
Key Features
- Cast iron construction for durable exhaust service
- Natural finish
- Square port shape
- Left-side application
- Gasket included
- Mounting hardware included
- Package contents: exhaust manifold, 1 manifold gasket, 2 studs, 2 nuts
Detailed Description
Dorman 674-276 is a replacement exhaust manifold designed for specified 1980-1986 GM vehicles. It is precision-engineered to match original fit and function, helping restore proper exhaust routing on the left side of the engine. This part cross-references 651266 and 14007400 for the same application.
Compatible vehicle coverage includes Fits 1980-1986 Chevrolet Caprice, Left; Fits 1980-1986 Chevrolet El Camino, Left; Fits 1980-1986 Chevrolet Monte Carlo, Left; Fits 1983-1986 Pontiac Bonneville, Left; Fits 1983-1986 Pontiac Grand Prix, Left; Fits 1980 Pontiac Grand Prix, Left; Fits 1983-1986 Pontiac Parisienne, Left; Fits 1980-1985 Chevrolet Impala, Left; Fits 1980-1983 Chevrolet Malibu, Left; Fits 1982 Buick Regal, Left; Fits 1980 Buick Regal, Left; Fits 1980-1981 Chevrolet Camaro, Left, for California Emissions; Fits 1980-1981 Pontiac Firebird, Left; Fits 1980 Buick Century, Left; Fits 1980 Oldsmobile Cutlass, Left; Fits 1980 Oldsmobile Cutlass Calais, Left; Fits 1980 Oldsmobile Cutlass Cruiser, Left; Fits 1980 Oldsmobile Cutlass Salon, Left; Fits 1980 Oldsmobile Cutlass Supreme, Left; Fits 1980 Pontiac Grand Am, Left; Fits 1980 Pontiac Grand LeMans, Left; and Fits 1980 Pontiac LeMans, Left.
Common Repair Uses
- Cracked or warped exhaust manifold replacement
- Exhaust leaks at the manifold-to-cylinder-head sealing surface
- Broken or missing manifold mounting hardware repair
- Downpipe connection service on left-side exhaust routing
- Restoring proper exhaust flow on GM V8 and related applications
Installation Notes and Tips
Verify left-side fitment, engine configuration, and emissions equipment before installation. Clean the mating surfaces thoroughly and replace worn fasteners or damaged sealing surfaces as needed. Use the included gasket and hardware during assembly, and torque fasteners to the vehicle manufacturer’s specification.
Quality Assurance
This Dorman exhaust manifold is manufactured to match original fit and function for the listed applications. The cast iron construction and included sealing components support a complete repair on the specified vehicles.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1986 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1986 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1986 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1986 | Pontiac | Bonneville | 5.0L | V8 | — | Left | — |
| 1986 | Pontiac | Grand Prix | 5.0L | V8 | — | Left | — |
| 1986 | Pontiac | Parisienne | 5.0L | V8 | — | Left | — |
| 1985 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1985 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1985 | Chevrolet | Impala | 5.0L | V8 | — | Left | — |
| 1985 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1985 | Pontiac | Bonneville | 5.0L | V8 | — | Left | — |
| 1985 | Pontiac | Grand Prix | 5.0L | V8 | — | Left | — |
| 1985 | Pontiac | Parisienne | 5.0L | V8 | — | Left | — |
| 1984 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1984 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1984 | Chevrolet | Impala | 5.0L | V8 | — | Left | — |
| 1984 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1984 | Pontiac | Bonneville | 5.0L | V8 | — | Left | — |
| 1984 | Pontiac | Grand Prix | 5.0L | V8 | — | Left | — |
| 1984 | Pontiac | Parisienne | 5.0L | V8 | — | Left | — |
| 1983 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1983 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1983 | Chevrolet | Impala | 5.0L | V8 | — | Left | — |
| 1983 | Chevrolet | Malibu | 5.0L | V8 | — | Left | — |
| 1983 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1983 | Pontiac | Bonneville | 5.0L | V8 | — | Left | — |
| 1983 | Pontiac | Grand Prix | 5.0L | V8 | — | Left | — |
| 1983 | Pontiac | Parisienne | 5.0L | V8 | — | Left | — |
| 1982 | Buick | Regal | 5.0L | V8 | — | Left | — |
| 1982 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1982 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1982 | Chevrolet | Impala | 5.7L | V8 | GAS | Left | — |
| 1982 | Chevrolet | Impala | 5.0L | V8 | — | Left | — |
| 1982 | Chevrolet | Malibu | 5.0L | V8 | — | Left | — |
| 1982 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1981 | Chevrolet | Camaro | 5.7L | V8 | — | Left | Fits vehicles with California Emissions. |
| 1981 | Chevrolet | Camaro | 5.0L | V8 | — | Left | Fits vehicles with California Emissions. |
| 1981 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1981 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1981 | Chevrolet | Impala | 5.7L | V8 | GAS | Left | — |
| 1981 | Chevrolet | Impala | 5.0L | V8 | — | Left | — |
| 1981 | Chevrolet | Malibu | 5.7L | V8 | — | Left | — |
| 1981 | Chevrolet | Malibu | 5.0L | V8 | — | Left | — |
| 1981 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1981 | Pontiac | Firebird | 5.0L | V8 | — | Left | — |
| 1980 | Buick | Century | 5.0L | V8 | — | Left | — |
| 1980 | Buick | Regal | 5.0L | V8 | — | Left | — |
| 1980 | Chevrolet | Camaro | 5.7L | V8 | — | Left | Fits vehicles with California Emissions. |
| 1980 | Chevrolet | Camaro | 5.0L | V8 | — | Left | Fits vehicles with California Emissions. |
| 1980 | Chevrolet | Caprice | 5.7L | V8 | GAS | Left | — |
| 1980 | Chevrolet | Caprice | 5.0L | V8 | — | Left | — |
| 1980 | Chevrolet | El Camino | 5.0L | V8 | — | Left | — |
| 1980 | Chevrolet | Impala | 5.7L | V8 | GAS | Left | — |
| 1980 | Chevrolet | Impala | 5.0L | V8 | — | Left | — |
| 1980 | Chevrolet | Malibu | 5.7L | V8 | — | Left | — |
| 1980 | Chevrolet | Malibu | 5.0L | V8 | — | Left | — |
| 1980 | Chevrolet | Monte Carlo | 5.0L | V8 | — | Left | — |
| 1980 | Oldsmobile | Cutlass | 5.0L | V8 | — | Left | — |
| 1980 | Oldsmobile | Cutlass Calais | 5.0L | V8 | — | Left | — |
| 1980 | Oldsmobile | Cutlass Cruiser | 5.0L | V8 | — | Left | — |
| 1980 | Oldsmobile | Cutlass Salon | 5.0L | V8 | — | Left | — |
| 1980 | Oldsmobile | Cutlass Supreme | 5.0L | V8 | — | Left | — |
| 1980 | Pontiac | Firebird | 5.0L | V8 | — | Left | — |
| 1980 | Pontiac | Grand Am | 5.0L | V8 | — | Left | — |
| 1980 | Pontiac | Grand LeMans | 5.0L | V8 | — | Left | — |
| 1980 | Pontiac | Grand Prix | 5.0L | V8 | — | Left | — |
| 1980 | Pontiac | LeMans | 5.0L | V8 | — | Left | — |
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