There is no doubt that the CP4 pump found in the LML Duramax has proven to be less than reliable. These pumps have a tendency to fail for many reasons and when they do fail they send metal shavings into the fuel rails and injectors resulting in the need for a complete fuel system overhaul.

Number 1 cause of failure is water or dirt contamination which is not covered under GMs warranty. In order to prevent this from happening we have developed a kit to convert the LML engine to accept and run a much more reliable CP3 pump that was found in the 01-10 Duramax.

Not only can it handle more abuse than the CP4, it's output is also higher which makes it a great upgrade if you're looking for more hp. This kit contains everything needed to swap from a CP4 to a CP3.

Kit comes complete with:

• CP3
• Lines
• Fittings
• Hoses
• Clamps
• Adapter plate

Pump Selection

• Sportzman CP3 is capable of supporting 675hp. Made from brand new Bosch CP3 pump using the best practices and tooling in the industry. You can be confident you're getting the best CP3 on the market for your truck. No Core Required. This kit is for a non-compliant engine. It does not have support for the 9th injector.
• Tuneless Nc pump is for those looking for the reliability of a CP3 pump without the need for a retune or looking for additional power. This pump does not support the 9th injector.
• Our Sportzman CP3 is backed by our 5-Year Unlimited Mile Warranty against manufacturer defects.

Details:

• Fits: 2011-2016 Chevrolet Silverado 2500 HD, 2011-2016 Chevrolet Silverado 3500 HD, 2011-2016 GMC Sierra 2500 HD, 2011-2016 GMC Sierra 3500 HD
• Fuel Type: Diesel
• Liter: 6.6 Liter
• Engine Years: 2011-2016
• Engine Manufacturer: Duramax
• Engine Designation: LML
• Warranty: 5 Year Unlimited Mile Warranty