Thermostat Housing Gasket 07-16 Chevy LS

The Thermostat Housing Gasket 07-16 Chevy LS is a critical OEM-specification seal engineered to prevent coolant leaks at the water neck interface on LS-platform engines. Built by MAHLE ORIGINAL/CLEVITE—a tier-one supplier to General Motors—this gasket maintains the structural integrity of your cooling system under sustained heat and pressure cycles. Whether you're rebuilding a stock engine, upgrading to a modern cooling configuration, or diagnosing a persistent weep, a quality thermostat housing gasket is non-negotiable for long-term reliability.

This gasket measures 0.24 inches thick and is constructed from premium rubber compound designed to resist thermal cycling, glycol-based coolant, and the corrosive environments inherent to LS engines running sustained boost or high-RPM applications. The precise geometry matches the OEM water neck port, ensuring flush sealing without excessive compression that can damage aluminum heads. Unlike cheap aftermarket alternatives that harden and fail prematurely, MAHLE's formulation maintains elasticity across the full operational temperature range—critical when dealing with LS variants that regularly see 210+ degree coolant temps under load.

This gasket fits 2007–2016 Chevy LS-series engines across truck, SUV, and performance platforms—including LSx swap applications where OEM parts compatibility becomes paramount. Installers should clean both mating surfaces to bare aluminum, apply light gasket sealer if desired, and torque the water neck bolts to specification in a cross pattern. Having a spare on hand during any coolant system work—whether routine thermostat replacement, intake manifold gasket repair, or radiator R&R—saves downtime and eliminates the risk of mid-job discovery that your old gasket crumbled during removal.