HomeBelts and Cooling > Gaskets and Sealing SystemsFel-Pro 35126 Engine Coolant Thermostat Seal
Part #: 35126

Fel-Pro 35126 Engine Coolant Thermostat Seal

⚙️ 24 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick, Oldsmobile, and Pontiac, LeSabre, Delta 88, Bonneville, Electra, Reatta, Riviera, 98, and Toronado
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Reliable Engine Coolant Thermostat Seal for Buick, Oldsmobile, Pontiac

The Fel-Pro 35126 engine coolant thermostat seal is designed to provide a secure and leak-free fit for your vehicle's cooling system. Engineered for select Buick, Oldsmobile, and Pontiac models, this seal helps maintain optimal engine temperature and performance.

  • Compatible with Buick 98, Oldsmobile Delta 88, LeSabre, Reatta, and Pontiac Bonneville, Riviera, Toronado
  • Durable construction to withstand engine heat and coolant exposure
  • Precise fitment ensures proper sealing of the thermostat housing
  • Part number 35126 for easy identification and replacement

Product Details and Compatibility

The Fel-Pro 35126 engine coolant thermostat seal is specifically designed for use in the cooling systems of Buick, Oldsmobile, and Pontiac vehicles, including models such as the Buick 98, Oldsmobile Delta 88, LeSabre, Reatta, and Pontiac Bonneville, Riviera, and Toronado. This seal fits the thermostat housing to prevent coolant leaks and maintain consistent engine temperature regulation. Using the correct seal is critical to avoid overheating and ensure the longevity of your engine components.

Common Applications and Problem Resolution

  • Prevents coolant leaks around the thermostat housing
  • Helps maintain proper engine operating temperature
  • Reduces risk of engine overheating due to seal failure
  • Eliminates coolant contamination and loss
  • Supports efficient thermostat operation and engine cooling

Installation Notes and Tips

When installing the Fel-Pro 35126 thermostat seal, ensure the thermostat housing and surrounding surfaces are clean and free of old gasket material or debris. Proper alignment of the seal is essential to prevent leaks. It is recommended to replace the seal whenever the thermostat is serviced or replaced. Use appropriate torque specifications for the thermostat housing bolts to avoid damage or improper sealing.

Quality Assurance and Warranty Information

Fel-Pro is known for manufacturing reliable gaskets and sealing components designed to meet or exceed OEM specifications. The 35126 engine coolant thermostat seal undergoes rigorous quality control to ensure durability and proper fitment. While specific warranty details may vary, Fel-Pro products typically come with a limited warranty against defects in materials and workmanship, providing confidence in the product's performance.

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1991BuickLeSabre3.8LV6N/A
1991OldsmobileDelta 883.8LV6N/A
1991PontiacBonneville3.8LV6N/A
1990BuickLeSabre3.8LV6N/A
1990BuickReatta3.8LV6N/A
1990BuickRiviera3.8LV6N/A
1990Oldsmobile983.8LV6N/A
1990OldsmobileDelta 883.8LV6N/A
1990OldsmobileToronado3.8LV6N/A
1990PontiacBonneville3.8LV6N/A
1989BuickLeSabre3.8LV6N/A
1989BuickReatta3.8LV6N/A
1989BuickRiviera3.8LV6N/A
1989Oldsmobile983.8LV6N/A
1989OldsmobileDelta 883.8LV6N/A
1989OldsmobileToronado3.8LV6N/A
1989PontiacBonneville3.8LV6N/A
1988BuickLeSabre3.8LV6N/A
1988BuickReatta3.8LV6N/A
1988BuickRiviera3.8LV6N/A
1988Oldsmobile983.8LV6N/A
1988OldsmobileDelta 883.8LV6N/A
1988OldsmobileToronado3.8LV6N/A
1988PontiacBonneville3.8LV6N/A

* 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:

1136011233790133610830603

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.