The XDP Fuel System Contamination Kit (Stock Replacement) XD518 includes all the items you need to repair the fuel system in your 2011-2016 GM Duramax 6.6L LGH after a CP4 pump failure. The factory CP4 pump is a known weak point and often fails in a catastrophic nature. As a result, debris from the CP4 failure typically contaminates the fuel injectors, fuel injector lines, fuel rails, and other fuel system plumbing. To repair the failed pump and eliminate the risk of contaminating the replacement parts, the previously mentioned components must then be replaced. Simply flushing the fuel system doesn't guarantee all the residual metal shavings or contaminants will be removed. This CP4 failure kit is a complete repair solution for your 6.6 Duramax LGH engine with CP4 fuel injection pump failure, water-in-fuel contamination, or DEF contamination.

The XD518 kit includes remanufactured fuel injectors, a remanufactured CP4 pump, along with new fuel injector lines, fuel rails, fuel feed pipe, fuel return line, and injector hold down bolts. Replacing these components will help ensure that all the debris is out of the fuel system, so you can be sure that the replacement fuel injectors and CP pump don't get contaminated from the previous pump failure. Get the XDP LGH Fuel Contamination Kit to get your Duramax back up and running after a CP4 failure.

Applications:

• 2011-2016 Chevrolet Express 2500 (6.6L Duramax LGH)
• 2011-2016 Chevrolet Express 3500 (6.6L Duramax LGH)
• 2011-2016 GMC Savana 2500 (6.6L Duramax LGH)
• 2011-2016 GMC Savana 3500 (6.6L Duramax LGH)

Note:

Core Return only applies to fuel injectors, injection pump, and fuel rails. Contaminated fuel lines do not need to be returned.

• (8) Fuel Injector Lines
• (1) Fuel Feed Line
• (1) Fuel Return Line
• (2) Genuine Bosch Fuel Rails
• (8) Fuel Injector Hold Down Bolts
• (1) CP4 Pump Installation Kit With Fuel Line
• (8) Genuine Bosch Remanufactured Fuel Injectors
• (1) Genuine Bosch Remanufactured CP4 Fuel Injection Pump