UnderDog Diesel CP3 Conversion Kit 2011-2016 LML

UnderDog Diesel CP3 Conversion Kit – 2011-2016 Duramax LML

Tired of dealing with the factory CP4 pump failures that plague the 2011-2016 LML Duramax? The UnderDog Diesel CP3 Conversion Kit is your bulletproof solution — swapping out the notorious CP4 for the proven, reliable CP3 pump platform that diesel enthusiasts trust.

Why Convert to CP3?

• Eliminates the risk of catastrophic CP4 failure and fuel system contamination
• CP3 pump is far more tolerant of low-lubricity fuels and real-world driving conditions
• Proven reliability on high-horsepower builds and daily drivers alike
• Restores confidence in your fuel system — whether you're towing, racing, or cruising

Kit Includes

• Our kit includes
   
  Billet Anodized CP3 Mounting Plate
  O-Ring for the Mounting Plate to Engine Seal
  1/2" Barbed Inlet Fitting
  AN Return Line Fitting Kit
  Low Pressure Line Routing Kit
  9th Injector Plug
  Rail Cap & Plug
  Stainless High Pressure Fuel Line
  Regulator Extension Harness (For easier connection, not needed however)

  Fuel Feed Hose (For those retaining the factory fuel filter)

Fitment

• 2011–2016 Chevrolet/GMC 2500HD / 3500HD with 6.6L Duramax LML

Stop gambling with your fuel system. Go CP3 and go with confidence.