129-2503 | ARP GM Duramax 6.6L Harmonic Balancer Bolt Kit
129-2503 | ARP GM Duramax 6.6L Harmonic Balancer Bolt Kit is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Sign up to be the first to know when it's here
Have a Question?
Customer also asked
Harmonic Damper Bolt Kit
GM Duramax 6.6L
Socket Size(s) : 1-1/16 12pt
When you upgrade the performance of your Duramax engine, many times you will exceed the capabilities of the factory hardware. ARP has the solution for you. Made out of premium grade 8740 alloy, this balancer bolt has a strength rated far superior to OE and "aircraft" quality. This ARP bolt is an excellent choice for your engine.
Proposition 65 Warnings.
Cancer and Reproductive Harm. See details below.
Items that are not CARB Legal will not be sold and ship to California or CARB states.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
