S/S Thermostat Housing Bolt Kit 12pt.

The ARP S/S Thermostat Housing Bolt Kit 12pt is engineered for builders and mechanics who demand reliability in small block Ford engine assembly. This stainless steel fastener kit replaces factory thermostat housing bolts with premium corrosion-resistant alternatives, eliminating the risk of seized or stripped fasteners during maintenance and rebuild operations. Whether you're performing routine cooling system service or executing a full engine rebuild, this kit provides the security and longevity that serious automotive work demands.

Manufactured from polished stainless steel, the S/S Thermostat Housing Bolt Kit features a 12-point head design that accommodates both standard and metric sockets with equal ease, reducing the chance of rounding during installation and removal. Each bolt measures 5/16 inch in male thread diameter with a 0.875-inch length—precisely engineered to match original equipment specifications while offering superior corrosion resistance. ARP's stainless construction resists rust, scale, and galvanic corrosion that commonly affects standard steel fasteners exposed to coolant and thermal cycling over extended periods.

This bolt kit is ideal for small block Ford engine rebuilds, high-performance cooling system upgrades, and marine or outdoor applications where corrosion prevention is non-negotiable. Professional technicians and engine builders select ARP fasteners for thermostat housings because stainless steel eliminates galling and corrosion issues that compromise both function and safety. The polished finish delivers clean aesthetics while maintaining structural integrity across repeated thermal cycles, making this kit an investment in engine longevity and reliability.