MAHLE Engine Coolant Thermostat Seal

The MAHLE engine coolant thermostat seal (also called a thermostat gasket or thermostat O-ring) creates a leak-resistant seal between the thermostat and its housing. It helps keep coolant in the cooling system, so the engine can hold the correct operating temperature.

Key Features:

• Seals the thermostat to the housing to help prevent coolant leaks
• Made to OE-style standards by MAHLE, a global supplier of engine and filtration components
• Made from sealing materials chosen to resist engine coolant, heat and pressure cycling
• Replaces worn, hardened or leaking thermostat seals during thermostat service

Replace the seal whenever you replace the thermostat. A new seal helps keep the cooling system reliable and protects the engine from overheating caused by coolant loss. Select the correct part number for your application from the variants listed on this page.