GM Duramax 6.6LHarmonic Damper Bolt Kit - 129-2503 booty We utilize world class calibration

We utilize world class calibration equipment and pride ourselves with a very low claim rate and our specialized computer driven test benches catch defects before they leave our facility

Cummins Heavy Duty Dual Pump Belt

Outflows Factory Intake by 35%

The kit comes complete with all of the high quality AN fittings and push lock hose needed to cleanly plumb your dual CP3s with our Fuel Distribution Block

GM Duramax 6.6LHarmonic Damper Bolt Kit - 129-2503 booty We utilize world class calibrationThe prices listed on this website are for estimating purposes only. Outside the United States, the prices may be higher due to transportation costs and import duties. Please check with your ARP dealer for actual pricing. Price includes applicable core fee . Part Number: 129 2503