S/S Starter 6pt Bolt Kit 3/8-16 x 4.400 UHL

The ARP 430-3514 Stainless Steel Starter 6-Point Bolt Kit is a premium fastening solution engineered for high-torque small-block engine applications. Manufactured by ARP, a leading authority in engine fastener technology, this bolt kit delivers the clamping force and durability demanded by both stock and modified engine builds where reliable starter mounting is critical to engine integrity and long-term reliability.

Specifications define the kit's capability: 3/8-16 thread diameter and pitch, 4.400 inches under-head length (UHL), and hex head design optimized for wrench engagement and torque application. The stainless steel construction resists corrosion in high-heat engine compartments and provides superior strength retention across temperature cycling common to repeated thermal stress. The polished finish not only enhances aesthetic appearance but also facilitates inspection for fatigue or stress cracking during routine maintenance intervals. This geometry and material combination is specifically calibrated for GM small-block starter mounting, where proper fastening prevents catastrophic engine case damage and starter system failure.

Professionals rebuilding or upgrading small-block GM engines—whether for street performance, drag racing, or vintage restoration—rely on ARP fastener kits to meet or exceed OEM specifications while delivering extended service life. The pairing format (sold as a pair) ensures balanced clamp load distribution across the starter mounting surface, critical for minimizing vibration and preventing loosening under engine vibration and thermal cycling. Engine builders, machine shops, and serious DIY enthusiasts recognize ARP as the standard for engine fastening precision.