Product Overview
Thermostat Gasket (2-Pack)

Ensure peak cooling system performance and prevent leaks with the Sierra Thermostat Gasket (2-Pack). This essential component provides a reliable seal between your thermostat housing and engine, crucial for maintaining optimal engine temperature and preventing costly damage. Designed for Mercruiser/OMC Stern Drive and Volvo Penta engines with aluminum exhaust manifolds, this gasket offers a durable and precise fit, guaranteeing worry-free operation on the water.
Key Features
- **Two-Pack:** Provides a spare gasket for future maintenance, saving you time and money.
- **Precise Fit:** Engineered to perfectly match Mercruiser/OMC Stern Drive and Volvo Penta engines with aluminum exhaust manifolds, ensuring a leak-free seal.
- **Durable Construction:** Built from high-quality materials to withstand the harsh marine environment, ensuring long-lasting performance.
- **Essential for Optimal Cooling:** Prevents coolant leaks, maintaining proper engine temperature and preventing overheating.
- **Easy Installation:** Simple to install, minimizing downtime and getting you back on the water quickly.
- **Compatible with Various Models:** Fits 110/120, 140/150/160 (I/L 6 cyl.), and MCM 3.0L/LX with closed cooling systems.
- **Meets or Exceeds OEM Specs:** Ensures reliable performance and compatibility, meeting or exceeding manufacturer's recommendations.
- **Backed by Sierra's Limited Lifetime Warranty:** Provides peace of mind and protection against defects.
What's in the Box
- Two Thermostat Gaskets
Specifications
The Captain's Take
As a seasoned captain, I know the importance of reliable engine performance. A small leak in your cooling system can lead to big problems out on the water. These Sierra Thermostat Gaskets provide a perfect seal, giving me the confidence that my engine is running at optimal temperature, no matter the conditions. Having a spare on hand is just smart seamanship – I highly recommend keeping a 2-pack onboard.