Engine Fastener Kit M10 x 1.00

The ARP 254-2901 is a set of Pro Series flexplate mounting bolts designed for high-performance applications. These bolts are forged from a premium aerospace alloy and heat-treated to achieve a tensile strength of 200,000 psi, ensuring reliability under demanding conditions. Key specifications include a M10 x 1.00 thread size, a 0.800-inch underhead length (UHL), and a 5/8-inch 12-point socket requirement for installation. Installation instructions recommend hand-tightening the bolts, followed by torquing them to 70 ft-lbs in an alternating or crisscross pattern. This ensures even pressure distribution and prevents potential damage to the flexplate or crankshaft. The kit is designed for Ford Modular 4.6L and 5.4L engines, and specific applications include 1997-2025 Mustang and F-150 models.