S/S Bolt Kit - 6pt. (5) 5/16-18 x 2.250

The S/S Bolt Kit - 6pt. (5) 5/16-18 x 2.250 from ARP is a precision fastening solution engineered for automotive builders and mechanics who demand reliability in critical engine and chassis applications. This stainless steel bolt kit addresses a fundamental challenge in performance builds: standard hardware can fail under extreme loads, vibration, and temperature cycles. Whether you're assembling a high-output engine, reinforcing structural components, or securing performance modifications, these ARP bolts provide the tensile strength and corrosion resistance that separates a reliable build from one prone to failure.

Constructed from premium stainless steel, the S/S Bolt Kit features six-point heads that maximize contact surface and eliminate the rounding that occurs with worn sockets on four-point fasteners. The 5/16-18 thread pitch and 2.250-inch length make these bolts ideal for engine block work, intake manifold mounting, and various chassis bracing applications where precise fitment is non-negotiable. ARP's manufacturing process ensures consistent hardness, superior fatigue resistance, and predictable preload retention—critical factors when clamping forces must remain stable across thermal cycling and high-RPM operation. The stainless steel construction resists corrosion and oxidation, eliminating the degradation that weakens conventional plated fasteners over time.

Experienced engine builders, fabricators, and performance shops trust ARP fasteners for applications demanding uncompromised quality and longevity. The five-bolt quantity in this kit suits single-application jobs or serves as a core component of larger assembly projects. Installation is straightforward for those familiar with torque specifications and proper fastening technique, though ARP's comprehensive documentation ensures even first-time users achieve correct preload. This kit delivers the peace of mind that comes with OEM-quality fastening in a performance context where failure is not an option.