Thermostat Housing GM LS w/ 1-1/2 - Clear

The Thermostat Housing GM LS w/ 1-1/2 - Clear from CVR Performance is a precision-engineered water neck assembly designed for GM LS-series engine builds. This component serves as the critical interface between your engine block and cooling system, directing coolant flow while maintaining optimal thermal management. Whether you're building a high-performance street engine, a track-focused LS swap, or restoring a classic with modern LS power, this thermostat housing delivers the reliability and clean aesthetics demanded by serious builders.

Constructed from lightweight aluminum with a clear anodized finish, this water neck features a 90-degree outlet orientation and 1-1/2 inch ID hose connection that accommodates standard cooling hose sizes without adapter complexity. The integrated O-ring seal ensures leak-free operation under sustained pressure and temperature cycles, while the swivel design allows for flexible hose routing in tight engine compartments. The clear anodized surface resists corrosion and oxidation while providing a professional appearance that complements modern engine bay presentations. This precision fit eliminates the guesswork of generic throttle body cooler solutions, offering direct compatibility with LS-series blocks.

LS engine enthusiasts, fabricators, and restoration shops rely on CVR Performance thermostat housings for bolt-in reliability without modification. The 1-1/2 inch hose ID integrates seamlessly with common cooling system configurations found in LS swaps, street rods, and high-output applications. At just 0.76 lbs, this compact assembly adds minimal weight while maintaining structural integrity under boost and extreme operating conditions. Installation is straightforward—simply bolt to the LS block, connect your radiator hose, and enjoy years of dependable cooling performance.