XDP PERFORMANCE VALVE SPRINGS & RETAINER KIT FOR 2001-2016 GM 6.6L DURAMAX bypasses Watts/Amps: 4/

Watts/Amps: 4/

FASS FUEL SYSTEMS DURAMAX FACTORY FUEL FILTER DELETE CANISTER (DFD-4000)

IP69K (waterproof

Featuring a precision machined and computer balanced components

XDP PERFORMANCE VALVE SPRINGS & RETAINER KIT FOR 2001-2016 GM 6.6L DURAMAX bypasses Watts/Amps: 4/The XDP Performance Valve Springs & Retainer Kit XD386 are a perfect upgrade for your modified 2001 2016 GM 6. 6L Duramax. Camshaft upgrades and other modifications that increase boost require more valve control. The XDP Performance Valve Spring feature a conical design for better valve control than a standard straight spring. The conical design also allows for smaller and lighter spring retainers. Each spring undergoes a stress relief process and is