Chevy S/S Thermostat Housing Bolt Kit 12pt.

The Chevy S/S Thermostat Housing Bolt Kit 12pt. from ARP is designed for builders and mechanics who require dependable performance in high-performance cooling systems. This bolt kit is essential for upgrading small-block or big-block Chevrolet engines with high-quality fastening hardware, addressing a common weak point in stock thermostat housings.

Factory bolts can fail under extreme heat and pressure, particularly in modified engines that operate at elevated coolant temperatures. ARP's stainless steel 12-point bolts offer superior corrosion resistance compared to standard zinc-plated fasteners, making them ideal for use in wet environments. The 12-point head design ensures even clamping force across the thermostat housing, minimizing the risk of stripping or galling during installation and removal.

This kit is trusted by street, strip, and road-race builders for Chevy engines ranging from 283 to 502 cubic inches, whether naturally aspirated or boosted. Installation is straightforward, allowing for a secure and leak-free cooling system that can withstand thousands of miles of operation.