Balancer Bolt Kit - Mopar 5.7/6.1L Hemi

The ARP Balancer Bolt Kit for Mopar 5.7/6.1L Hemi engines is a critical fastening component designed for high-performance and heavy-duty applications where factory hardware falls short. This harmonic balancer bolt secures the crankshaft balancer assembly—the rotating weight that reduces vibration and protects engine internals during operation. Whether you're rebuilding a stock Hemi, upgrading to performance specifications, or maintaining emergency and tactical vehicle powerplants, this precision fastener ensures reliable engagement under sustained load and thermal cycling.

Manufactured by ARP (Applied Racing Products), the Balancer Bolt Kit features a 14mm x 1.50 thread pitch, 4.000-inch length, and a 19mm 12-point head that prevents rounding and allows precise torque control. The fastener is constructed from chromoly steel and finished in black oxide, providing superior tensile strength compared to factory bolts while resisting corrosion in engine bay environments. The 12-point head geometry distributes load evenly across the socket, reducing fastener slippage during installation and removal—critical when working with high-value engine builds where repeat service cycles are anticipated.

This kit is essential for Gen III Hemi engine rebuilds, including both 5.7L and 6.1L displacement variants found in Dodge, Chrysler, and Jeep platforms. Installation requires proper torque specification per ARP guidelines and a compatible 19mm 12-point socket to avoid fastener damage. Weighing 0.75 lbs and packaged in compact 5.7 x 1.4 x 9.6-inch dimensions, the bolt integrates seamlessly into engine assembly workflows. Tactical and emergency vehicle operators rely on ARP fasteners for their non-compromising engineering—a single point of failure in crankshaft assembly can disable a vehicle, making premium fastening hardware a non-negotiable investment.