/live/media/FP/FP_35126_TOP.jpg)
Will it fit your vehicle?
Confirm before you buy. Free return shipping if it doesn't fit.
Fel-Pro 35126 Engine Coolant Thermostat Seal
| Brand | Fel-Pro 35126 |
|---|---|
| Fits | Buick, Oldsmobile, and Pontiac · 24 vehicles |
Application-specific materials. Engine coolant thermostat seal built for reliable sealing performance.
100% vehicle sealing. Delivers a dependable seal for cooling system service.
Cross-references Gates 33610, 113601 and 830603 for the same application. See all 4.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Fel-Pro 35126 Engine Coolant Thermostat Seal
Fel-Pro 35126 is an engine coolant thermostat seal built for direct-fit sealing in select GM applications. It is made with application-specific materials to help maintain a reliable coolant seal where the thermostat housing meets the engine.
Key Features
- Engine coolant thermostat seal for sealing the thermostat assembly
- Application-specific material selection for the listed vehicle applications
- Supports 100% vehicle sealing when installed on the correct mating surfaces
- Fel-Pro sealing solution trusted by professional technicians
- Cross-references Gates 33610 for the same application
Detailed Description
This Fel-Pro thermostat seal is intended for vehicles including 1988-1991 Buick LeSabre, 1988-1990 Buick Reatta, 1988-1990 Buick Riviera, 1988-1991 Oldsmobile Delta 88, 1988-1990 Oldsmobile 98, 1988-1990 Oldsmobile Toronado, and 1988-1991 Pontiac Bonneville. The Fel-Pro 35126 part number is used in cooling-system sealing applications where a precise thermostat seal is needed to help maintain coolant containment at the housing interface.
Fel-Pro gaskets are engineered with materials selected for the specific application, helping deliver consistent sealing performance in service. If you are replacing a thermostat seal on a Buick LeSabre, Oldsmobile Delta 88, or Pontiac Bonneville, Fel-Pro 35126 provides a direct replacement option for the listed fitments.
What It Is Used For
- Replacing a leaking thermostat seal at the coolant outlet or housing
- Restoring a proper seal after thermostat service
- Addressing coolant seepage around the thermostat housing
- Helping correct temperature-control issues caused by coolant loss
- Supporting maintenance on Buick, Oldsmobile, and Pontiac cooling systems
Installation Notes and Tips
Inspect the thermostat housing and mating surfaces before installation. Remove old gasket material, corrosion, and coolant residue so the new seal can seat evenly. Verify the application by year, make, and model before installation, especially on 1988-1991 Buick LeSabre and 1988-1991 Pontiac Bonneville fitments.
Quality Assurance
Fel-Pro uses application-specific sealing materials and vehicle-focused design standards to support dependable sealing performance in professional repair work.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1991 | Buick | LeSabre | 3.8L | V6 | N/A | — |
| 1991 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | — |
| 1991 | Pontiac | Bonneville | 3.8L | V6 | N/A | — |
| 1990 | Buick | LeSabre | 3.8L | V6 | N/A | — |
| 1990 | Buick | Reatta | 3.8L | V6 | N/A | — |
| 1990 | Buick | Riviera | 3.8L | V6 | N/A | — |
| 1990 | Oldsmobile | 98 | 3.8L | V6 | N/A | — |
| 1990 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | — |
| 1990 | Oldsmobile | Toronado | 3.8L | V6 | N/A | — |
| 1990 | Pontiac | Bonneville | 3.8L | V6 | N/A | — |
| 1989 | Buick | LeSabre | 3.8L | V6 | N/A | — |
| 1989 | Buick | Reatta | 3.8L | V6 | N/A | — |
| 1989 | Buick | Riviera | 3.8L | V6 | N/A | — |
| 1989 | Oldsmobile | 98 | 3.8L | V6 | N/A | — |
| 1989 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | — |
| 1989 | Oldsmobile | Toronado | 3.8L | V6 | N/A | — |
| 1989 | Pontiac | Bonneville | 3.8L | V6 | N/A | — |
| 1988 | Buick | LeSabre | 3.8L | V6 | N/A | — |
| 1988 | Buick | Reatta | 3.8L | V6 | N/A | — |
| 1988 | Buick | Riviera | 3.8L | V6 | N/A | — |
| 1988 | Oldsmobile | 98 | 3.8L | V6 | N/A | — |
| 1988 | Oldsmobile | Delta 88 | 3.8L | V6 | N/A | — |
| 1988 | Oldsmobile | Toronado | 3.8L | V6 | N/A | — |
| 1988 | Pontiac | Bonneville | 3.8L | V6 | N/A | — |
| No rows match your filter. | ||||||