2011-2016 Duramax Fuel System Replacement Kit (1090X)

Fits

Catastrophic failure on CP3 fuel injection pumps on 2011-2016 LML Duramax trucks will send small metallic debris throughout the fuel system causing problems throughout the fuel system. The solution? A complete replacement kit that includes all the necessary components to fix this mess. Don't wait until it's too late - get it now!

This kit requires no tuning and is EPA-approved. The CP3 pump is already re-calibrated to match the LML stock CP4 fuel curve. This kit is designed to replace the less reliable CP4 that comes stock on the LML.

Part Number: 1090X

• No Tuning Required
• EPA Approved
• Recalibrated To Match LML Stock CP4 Fuel Curve
• New S&S Modified CP3
• Comprehensive Kit
• Replaces Less Reliable CP4

Includes: 

• CARB CP3 Pump
• Fuel rails
• Fuel injectors
• Fuel lines
• Master Filter Head Kit (Filters, filter head rebuild kit, WIF plug, bleeder screw, MA Additive)
• All Gaskets & Seals Required

Duramax LML CP4 Pump Failure

The CP4 fuel injection pump in 2011-2016 Duramax trucks suffered high-pressure fuel pump issues due to lack of lubrication. The CP4 was designed to be a more efficient pump than its predecessor, the CP3 pump. However, the CP4 proved to be less reliable than the CP3. An LML CP4 pump failure will present itself with a hard start or no start condition and can result in the following trouble codes: P0087, P0088, P0191, or P128E. This can be confirmed by removing the CP4 pump and fuel pressure regulator and checking for cracks and metal debris on the fuel pressure regulator screen.