SBF Main Bolt Kit - Fits 351C 2-Bolt

The ARP SBF Main Bolt Kit for 351C 2-Bolt applications delivers the fastener integrity required for high-performance small-block Ford builds. This chromoly main bolt kit is engineered for engine builders and machine shops working with Cleveland and modified small-block platforms where OEM hardware cannot reliably handle elevated cylinder pressures, forced induction, or sustained high RPM operation. ARP's hexagon-head design and black oxide finish combine proven load-carrying capacity with corrosion resistance in both street and competition environments.

The 2-bolt main configuration suits early-generation Ford blocks and common small-block Ford modified applications where block geometry restricts expansion to four-bolt designs. Chromoly material specification provides superior tensile strength compared to stock fasteners, critical for engines running sustained boost, nitrous oxide systems, or naturally aspirated builds exceeding 6,000 RPM. The black oxide coating protects against oxidation during extended storage and engine operation without requiring secondary treatment. Each bolt in this kit meets ARP's load specifications and fastening torque requirements, ensuring consistent clamping force across all main journals.

Engine builders, hot rod fabricators, and machine shops rely on ARP main bolt kits when original fasteners cannot meet the demands of modified 351C and small-block Ford platforms. This kit addresses a specific compatibility requirement—the 2-bolt main pattern—that eliminates guesswork when rebuilding or upgrading factory blocks. Proper fastening of the crankshaft to the block is foundational to engine reliability, and undersized or inadequate hardware is a known failure point in high-output builds.