Seal the coolant bypass connection and keep your engine's cooling circuit tight with the MAHLE Engine Coolant Water Bypass Gasket C31274. It drops in as a direct-fit replacement for many GM 3.8L V6 applications, including the 1996-2005 Buick LeSabre, 1995-2002 Chevrolet Camaro, 2000-2005 Chevrolet Impala, 1995-2005 Pontiac Bonneville and 1997-2008 Pontiac Grand Prix — see the Buyer's Guide tab for the full list of 19 applications.
- Paper construction: gasket material is paper, matching the original coolant bypass sealing surface.
- OEM Standard grade: built to an OEM Standard item grade for a dependable reseal at the bypass joint.
- Coolant-side sealing: seals the water bypass connection to help contain engine coolant and maintain proper flow through the cooling circuit.
- Made in the United States.
Signs this gasket may need replacing include coolant seepage or weeping at the bypass connection and low coolant level. If a failed bypass gasket is the source of the leak, this replaces it; diagnose the cause before installing. One gasket per package; listed applications use quantity one.
Interchange: 36021 · 24505049 · WO8463
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this gasket do?
It seals the engine coolant water bypass connection, helping contain coolant and maintain proper flow through the cooling circuit.
Will this fit my vehicle?
It's a direct-fit replacement for many GM 3.8L V6 applications, such as the Buick LeSabre, Chevrolet Camaro and Pontiac Grand Prix. Check the Buyer's Guide tab for all 19 listed applications.
What is the gasket made of?
The gasket material is paper, and it is built to an OEM Standard item grade.
What are signs this gasket needs replacing?
Coolant seepage or weeping at the bypass connection and a dropping coolant level. Diagnose the cause before replacing, since leaks can have other sources.
How many gaskets come in the package?
One gasket per package. The listed applications each use a quantity of one.
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