HomeBelts and Cooling > Gaskets and Sealing SystemsFel-Pro 35981 Engine Coolant Thermostat Seal
Part #: 35981

Fel-Pro 35981 Engine Coolant Thermostat Seal

⚙️ 34 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$15.17Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick and Chevrolet, Encore, Trax, Sonic, Cruze, and Cruze Limited
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Thermostat Seal for Buick and Chevrolet

The Fel-Pro 35981 Engine Coolant Thermostat Seal is designed to provide a secure and leak-free seal for your vehicle's thermostat housing. Engineered for premium performance, this seal is compatible with select Buick and Chevrolet models, including the Cruze, Cruze Limited, Encore, Sonic, and Trax.

Key Features of Fel-Pro 35981 Thermostat Seal

  • Premium grade material ensures durability and long-lasting performance
  • Precisely engineered to fit Buick and Chevrolet models such as Cruze, Cruze Limited, Encore, Sonic, and Trax
  • Maintains a tight seal to prevent coolant leaks and maintain engine temperature regulation
  • Compatible with engine coolant thermostat housings for reliable operation
  • Manufactured by Fel-Pro, a trusted name in gaskets and sealing systems

Detailed Description of the Engine Coolant Thermostat Seal

The Fel-Pro 35981 Engine Coolant Thermostat Seal is crafted from premium-grade materials to withstand the thermal and mechanical stresses found in engine cooling systems. This seal is critical for maintaining the integrity of the thermostat housing, preventing coolant leaks that can lead to engine overheating or inefficient temperature control. Designed specifically for Buick and Chevrolet vehicles, including the Cruze, Cruze Limited, Encore, Sonic, and Trax, this part ensures a precise fit and reliable sealing performance. The premium grade type of this seal supports consistent engine operation and helps extend the life of your cooling system components.

Common Applications and Issues Addressed

  • Prevents coolant leaks around the thermostat housing
  • Helps maintain proper engine temperature regulation
  • Reduces risk of engine overheating due to seal failure
  • Eliminates coolant contamination and loss
  • Supports overall engine cooling system efficiency

Installation Notes and Tips

  • Ensure the thermostat housing surface is clean and free of old gasket material before installation
  • Verify compatibility with your specific Buick or Chevrolet model, including Cruze, Cruze Limited, Encore, Sonic, or Trax
  • Use proper torque specifications when securing the thermostat housing to avoid seal damage
  • Inspect the seal for any defects prior to installation
  • Replace the seal whenever the thermostat or housing is serviced to maintain optimal sealing

Quality Assurance and Warranty Information

Fel-Pro manufactures the 35981 Engine Coolant Thermostat Seal to meet stringent quality standards, ensuring reliable sealing performance in demanding engine environments. This premium grade seal undergoes rigorous testing to confirm durability and fitment accuracy. While specific warranty details may vary, Fel-Pro products typically come with a limited warranty against defects in material and workmanship, providing confidence in the product's quality and longevity.

This part fits 34 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021BuickEncore1.4LL4N/A
2021ChevroletTrax1.4LL4N/A
2020BuickEncore1.4LL4N/A
2020ChevroletSonic1.4LL4N/A
2020ChevroletTrax1.4LL4N/A
2019BuickEncore1.4LL4N/A
2019ChevroletSonic1.4LL4N/A
2019ChevroletTrax1.4LL4N/A
2018BuickEncore1.4LL4N/A
2018ChevroletSonic1.4LL4N/A
2018ChevroletTrax1.4LL4N/A
2017BuickEncore1.4LL4N/A
2017ChevroletSonic1.4LL4N/A
2017ChevroletTrax1.4LL4N/A
2016BuickEncore1.4LL4N/A
2016ChevroletCruze1.4LL4N/A
2016ChevroletCruze Limited1.4LL4N/A
2016ChevroletSonic1.4LL4N/A
2016ChevroletTrax1.4LL4N/A
2015BuickEncore1.4LL4N/A
2015ChevroletCruze1.4LL4N/A
2015ChevroletSonic1.4LL4N/A
2015ChevroletTrax1.4LL4N/A
2014BuickEncore1.4LL4N/A
2014ChevroletCruze1.4LL4N/A
2014ChevroletSonic1.4LL4N/A
2014ChevroletTrax1.4LL4N/A
2013BuickEncore1.4LL4N/A
2013ChevroletCruze1.4LL4N/A
2013ChevroletSonic1.4LL4N/A
2013ChevroletTrax1.4LL4N/A
2012ChevroletCruze1.4LL4N/A
2012ChevroletSonic1.4LL4N/A
2011ChevroletCruze1.4LL4N/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:

55565619C32639

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