XDP XD386 Performance Valve Springs & Retainer Kit 01-16 GM 6.6L Duramax SB-76-1007 including Models 30301 or 30302

including Models 30301 or 30302

ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality

Whether you've just started making improvements to your Cummins or you've installed the whole gambit of exhaust

This kit features a digital gauge

And what about two reinforced Hi-Lift jacking points for when you're really stuck

XDP XD386 Performance Valve Springs & Retainer Kit 01-16 GM 6.6L Duramax SB-76-1007 including Models 30301 or 30302Add performance, durability, and longevity to your Duramax by upgrading with this complete valve spring and retainer kit from XDP. The XDP Performance Valve Spring & Retainer Kit features a conical design for better valve control over the standard straight spring. The conical design also allows for smaller and lighter spring retainers. Each spring undergoes a stress relief process and is computer load mapped to ensure quality and long term