BBM Complete Engine Fastener Kit 6pt.

The ARP BBM Complete Engine Fastener Kit 6pt. (Part Number 545-9801) is a comprehensive fastener solution engineered for Mopar B and RB-series engine builds. This hex-head chromoly fastener kit delivers the structural integrity and clamping force required for high-horsepower engine assembly, whether for street performance, competition, or restoration work. The black oxide finish resists corrosion while maintaining a professional appearance on internal engine components.

Constructed from chromoly steel, these fasteners offer superior tensile strength compared to OEM hardware, critical when building engines that exceed factory specifications or run extended boost pressures. The 6-point head design provides superior contact geometry during installation and removal, reducing the risk of stripping or fastener failure. Black oxide plating protects against rust in humid engine bay environments while maintaining fastener grip without the brittleness associated with over-hardened finishes. This complete kit eliminates the need to source fasteners individually, ensuring dimensional consistency and proper preload across all engine fastening points.

Builders working on Mopar B-block and RB-block engines—from 340 and 360 small-blocks to 440 and 426 Hemi big-blocks—rely on purpose-built fastener kits to ensure repeatable assembly quality. This kit addresses the full spectrum of engine fastening applications without cross-referencing multiple part numbers. Weighing 4.69 lbs and compact enough to fit standard workbench storage, the ARP BBM kit represents a straightforward path to engine-building confidence, whether you're tackling a first rebuild or managing a professional engine shop operation.