SKU #: MAH-C31900 MPN #: C31900

MAHLE Engine Coolant Outlet Gasket 01-16 GM 6.6L Duramax LLY/LBZ/LMM/LML

Name: MAHLE Engine Coolant Outlet Gasket 01-16 GM 6.6L Duramax LLY/LBZ/LMM/LML
Brand: MAHLE
Price: 6.69 USD
Availability: InStock

$6.69

Get 6 points in loyalty rewards

coolant thermostat gasket against white background

Description

Are you replacing a leaking thermostat housing gasket? The MAHLE Thermostat Housing Gasket is a direct-fit OE replacement that seals the thermostat housing to the engine’s coolant outlet. This gasket prevents coolant leaks at the housing connection point, helping maintain proper cooling system pressure and ensuring stable engine operating temperatures. Replacing a worn or brittle gasket during thermostat or cooling system service helps prevent coolant seepage that can lead to overheating, coolant loss, or reduced engine reliability. Manufactured to meet or exceed original equipment specifications, the MAHLE C31900 features OE-style construction engineered for precise fitment and dependable sealing performance. The gasket is designed to withstand continuous exposure to coolant, engine heat, and pressure cycles while maintaining a consistent seal between the thermostat housing and cylinder head. Built with durable materials and strict manufacturing standards, MAHLE gaskets provide long-lasting reliability and install easily as a direct replacement during thermostat replacement or cooling system service.

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

Free Customer Loyalty Program

No Salesmen, Just Enthusiasts

Are you replacing a leaking thermostat housing gasket? The MAHLE Thermostat Housing Gasket is a direct-fit OE replacement that seals the thermostat housing to the engine’s coolant outlet. This gasket prevents coolant leaks at the housing connection point, helping maintain proper cooling system pressure and ensuring stable engine operating temperatures. Replacing a worn or brittle gasket during thermostat or cooling system service helps prevent coolant seepage that can lead to overheating, coolant loss, or reduced engine reliability.

Manufactured to meet or exceed original equipment specifications, the MAHLE C31900 features OE-style construction engineered for precise fitment and dependable sealing performance. The gasket is designed to withstand continuous exposure to coolant, engine heat, and pressure cycles while maintaining a consistent seal between the thermostat housing and cylinder head. Built with durable materials and strict manufacturing standards, MAHLE gaskets provide long-lasting reliability and install easily as a direct replacement during thermostat replacement or cooling system service.

Vehicle Fitment

2001-2016 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.