Upgrade your LML Duramax with the DDP NCP4-421 New CP4 Injection Pump. This direct replacement pump offers reliable performance with no core charge required. Engineered for a precise fit, it comes complete with all necessary components for easy installation. Backed by a 1-year unlimited mileage warranty, it ensures your truck runs smoothly and efficiently. Ideal for replacing a worn-out CP4, this pump restores optimal function to keep your vehicle performing like new.

• Direct replacement for CP4 injection pump
• Complete with installation components
• No core charge required
• 1-year unlimited mileage warranty
• Restores optimal engine performance