The ARP 145-2503 is a square drive harmonic balancer bolt for Mopar V8 engines. It uses a 3/4-16 in thread, is 1.420 in long, and has a 1-1/8 in hex head with a 1/2 in square drive; machined from chromoly steel with a black oxide finish and includes a washer.
Specifications:
- 3/4-16 in thread
- 1.420 in long
- 1-1/8 in hex head
- 1/2 in square drive
- Washer included
- Chromoly steel construction
- Black oxide finish
- Sold each
Applications:
- Mopar V8 engines
FAQ
What thread size and length does the ARP 145-2503 balancer bolt use?
It uses a 3/4-16 in thread and is 1.420 in long.
What drive feature does this bolt have?
It has a 1-1/8 in hex head with a 1/2 in square drive.
Is a washer included?
Yes, a washer is included.
Which engines does this bolt fit?
Mopar V8 engines.

