SBM Complete Engine Fastener Kit 6pt.

The ARP SBM Complete Engine Fastener Kit 6pt (part number 544-9801) is a comprehensive chromoly hex-head fastener solution engineered for Small Block Mopar engine builds and rebuilds. Designed by ARP—the industry standard for critical fastening applications—this kit delivers the material strength and corrosion resistance required for high-performance and street applications alike. The black oxide finish provides both durability and a professional appearance while protecting against oxidation in the engine bay.

Chromoly construction offers superior tensile strength compared to standard steel fasteners, which is critical for applications involving increased boost pressure, higher RPM operation, or modified combustion loads. The 6-point head design ensures secure engagement with quality wrenches and sockets, reducing the risk of rounding that can occur with 12-point heads under heavy torque or difficult access conditions. This complete kit consolidates the fastener requirements for a full engine assembly, eliminating the need to source individual components and reducing the risk of mixing incompatible hardware grades during rebuild.

This kit is ideal for Small Block Mopar engine builders, restoration projects, and performance upgrades targeting 318, 340, and 360 cubic inch applications. Whether you're refreshing an original engine or preparing a stroker build, having a complete fastener solution pre-verified for the platform eliminates guesswork and ensures consistency across critical load points. The kit's comprehensive coverage makes it a time-saving and reliability-focused choice for machine shops, professional rebuilders, and serious DIY enthusiasts.