GM Duramax 6.6LHarmonic Damper Bolt Kit - 129-2503 booty the Evolution is the ultimate

the Evolution is the ultimate package for the 1999-2003 Ford 7

Outflows factory intake by 55%

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

Why do I need a Fleece Coolant Bypass

Includes intake horn

GM Duramax 6.6LHarmonic Damper Bolt Kit - 129-2503 booty the Evolution is the ultimateThe 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