S/S Thermostat Housing Bolt Kit 12pt.

The ARP S/S Thermostat Housing Bolt Kit 12pt is designed for builders and mechanics who require precise fastening in high-temperature engine environments. Thermostat housing bolts are essential for securing the coolant passage cover to the engine block, a location that endures constant thermal cycling, pressure fluctuations, and vibration.

This kit replaces OEM hardware with premium stainless steel fasteners, minimizing the risk of corrosion and ensuring reliable clamping force throughout the engine's service life. The 12-point bolt design offers superior engagement geometry compared to traditional 6-point heads, reducing the likelihood of rounding during installation and removal, especially in tight engine bays.

Engine builders and enthusiasts performing head gasket replacements, engine refreshes, or cooling system upgrades will find this bolt kit invaluable, particularly when original fasteners have become compromised or corroded. The stainless steel composition is especially beneficial in environments prone to corrosion, ensuring long-lasting performance.