2001-2010 Duramax XP Series CP3 Injection Pump (XP1285105)

Industrial Injection XP Series CP3 injection pump for 2001-2010 Chevrolet Silverado 2500HD/3500 and GMC Sierra 2500HD/3500 6.6L Duramax (LB7, LLY, LBZ, LMM). The high-output CP3 in Industrial Injection's lineup — a 12mm stroker crankshaft paired with oversized 9mm plungers and DLC-coated internals.

Standard CP3 plungers measure 7.5mm; the XP runs 9mm. The larger plungers combined with the higher-lift crank are designed to push more fuel per revolution, with the goal of supporting more horsepower from fewer pumps. Hardened DLC-coated plungers and tappets are intended to improve reliability and reduce sticking.

• XP Series CP3 — Maximum Fuel Output
• 12mm Stroker Crankshaft
• Oversized 9mm Plungers
• Hardened & DLC-Coated Internals
• Supports Over 1100 HP
• No Special Tuning Required
• Part Number: XP1285105

• Requires a 260gph or greater supply pump.