The ARP Harmonic Balancer Bolt is a chromoly fastener finished in black oxide with a 12-point head and included washer, designed to secure the harmonic balancer on Pontiac V8 engines.
Specifications:
- 5/8-18 in Thread
- 1.580 in Long
- 5/8 in 12-Point Head
- Washer Included
- Chromoly
- Black Oxide finish
- Each
Applications:
- Pontiac V8
FAQ
What does the ARP 190-2501 Balancer Bolt include?
This is a single chromoly harmonic balancer bolt sized 5/8-18 thread and 1.580 in long, with a 5/8 in 12-point head, black oxide finish, and included washer.
What material and finish is the bolt?
The bolt is made from chromoly steel and finished in black oxide for corrosion resistance and durability.
Which engines is the 190-2501 bolt designed for?
This bolt is designed for Pontiac V8 engines.

