• Cart

SKU #: MAH-C31889 MPN #: C31889

MAHLE Thermostat Housing Gasket 06-16 GM 6.6L Duramax LLY/LBZ/LMM/LML

$2.17
Get 2 points in loyalty rewards
Description
Is it time to replace a worn thermostat housing gasket to stop coolant leaks? The MAHLE Thermostat Housing Gasket is a direct-fit OE replacement that seals the thermostat housing and prevents coolant from escaping where the housing meets the engine. This small but critical gasket helps maintain proper coolant circulation and system pressure, ensuring the engine reaches and maintains the correct operating temperature. Replacing a damaged or brittle gasket during thermostat service helps prevent coolant leaks that can lead to overheating or reduced cooling system efficiency. Manufactured to meet or exceed original equipment specifications, the MAHLE C31889 uses durable silicone sealing material engineered to withstand constant exposure to engine heat, coolant chemicals, and pressure cycles. Its precision-cut design ensures a consistent seal around the thermostat housing while maintaining flexibility during thermal expansion and contraction. Built for dependable OE-level fitment and durability.
Back-order

Please Note: This product is currently Back-Ordered. Please be aware that there may be a delay in shipping.

Enter your zip and we'll see if installation is available.

  • Request quotes from local installers at checkout
  • Compare options and choose the best fit for your install

Is it time to replace a worn thermostat housing gasket to stop coolant leaks? The MAHLE Thermostat Housing Gasket is a direct-fit OE replacement that seals the thermostat housing and prevents coolant from escaping where the housing meets the engine. This small but critical gasket helps maintain proper coolant circulation and system pressure, ensuring the engine reaches and maintains the correct operating temperature. Replacing a damaged or brittle gasket during thermostat service helps prevent coolant leaks that can lead to overheating or reduced cooling system efficiency.

Manufactured to meet or exceed original equipment specifications, the MAHLE C31889 uses durable silicone sealing material engineered to withstand constant exposure to engine heat, coolant chemicals, and pressure cycles. Its precision-cut design ensures a consistent seal around the thermostat housing while maintaining flexibility during thermal expansion and contraction. Built for dependable OE-level fitment and durability.

Vehicle Fitment
2006-2016 GM 6.6L Duramax LLY/LBZ/LMM/LML
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
About MAHLE

MAHLE's reputation speaks for itself. As a leading global supplier of high-quality engine components, trusted in both passenger and commercial vehicles. Their parts, such as pistons, gaskets, and engine components, keep diesel engines running stronger for longer, making them a go-to choice for heavy-duty trucks and high-performance applications.

As a leading global development partner for the automotive and engine industry, MAHLE offers unique systems competence in the internal combustion engine and engine peripherals. MAHLE Motorsports has a drive towards performance by building engine components, such as the MAHLE MonoTherm pistons, to distinctly service high-performance diesel engines. The MAHLE division is most notable for building quality OE replacement gasket sets that are a cut above the rest.

Founded in 1920, MAHLE has been shaping the future of mobility for over a century. With 22 North American factories supplying OEMs across passenger cars and heavy vehicles, and 135 factories worldwide supported by 11 technology centers and more than 5,000 engineers, MAHLE has built a reputation for innovation, durability, and expertise. Today, one in every two vehicles globally features MAHLE components, a testament to their long-standing commitment to quality and reliability.