Thermostat Housing Bolt Kit - 6pt. LS1/LS2

The Thermostat Housing Bolt Kit - 6pt. LS1/LS2 by ARP is designed for serious engine builders and performance enthusiasts who require reliable fasteners in high-heat environments. This kit is essential for those modifying LS-based engines for street performance, track duty, or forced induction, where every fastener plays a critical role in securing the thermostat housing to coolant passages and intake components.

ARP's 6-point bolts are engineered to provide superior clamping force and fatigue resistance compared to standard fasteners. They are made from proprietary materials that resist stress corrosion and maintain preload integrity across a wide range of temperatures. The 6-point design minimizes cam-out risk during installation, which is crucial in tight engine bay spaces where socket slip-off can lead to stripped fastener heads or damage to surrounding components.

Engine builders, tuners, and DIY mechanics upgrading cooling systems or running higher boost levels will find this kit invaluable for its reliability and peace of mind. It is compatible with LS1 and LS2 platforms, ensuring proper thread engagement, correct length, and compatible pitch without modification or fitment issues.