Thermostat Housing Gasket 04-06 Chevy LS

The Thermostat Housing Gasket 04-06 Chevy LS is an essential sealing component designed for LS-based engines found in fourth and fifth-generation Chevrolet vehicles. This gasket is crucial for preventing coolant leaks between the thermostat housing and the engine block, which can lead to overheating and engine damage. Whether you're maintaining a stock setup or working on an LS swap, replacing a degraded gasket is vital for optimal engine performance.

Manufactured by MAHLE ORIGINAL/CLEVITE under part number C31823, this gasket is crafted to withstand the thermal cycling typical of modern LS engines. Its ultra-thin profile allows for precise fitment, ensuring a watertight seal against both aluminum and cast-iron thermostat housings. The gasket is designed to operate effectively within a coolant temperature range of 180–220°F, making it suitable for a variety of driving conditions.

This gasket is particularly beneficial for LS engine builders, performance tuners, and daily drivers maintaining 2004–2006 Chevrolet Silverado, Tahoe, Suburban, and Corvette models equipped with LS2 or LS3 variants. Proper installation is crucial and requires draining the cooling system to ensure a successful replacement. By using this high-quality gasket, you can prevent costly repairs and maintain the reliability of your vehicle.