BBM Complete Engine Fastener Kit 6pt.

The ARP BBM Complete Engine Fastener Kit 6pt. (Part Number 545-9801) is a comprehensive fastener solution designed specifically for Mopar B/RB-Series Engines. This hex-head chromoly fastener kit is essential for high-horsepower engine assembly, whether for street performance, competition, or restoration work.

Constructed from chromoly steel, these fasteners provide superior tensile strength compared to OEM hardware, which is critical for engines that exceed factory specifications or operate under extended boost pressures. The black oxide finish not only resists corrosion but also maintains a professional appearance on internal engine components. The 6-point head design enhances contact geometry during installation and removal, minimizing the risk of stripping or fastener failure.

Builders working on Mopar B-block and RB-block engines—from 340 and 360 small-blocks to 440 and 426 Hemi big-blocks—benefit from this purpose-built fastener kit. It ensures dimensional consistency and proper preload across all engine fastening points, making it a reliable choice for engine assembly.