ATS Twin Fueler Kit W/O Pump Fits 2011-2017 6.6L Duramax

The factory CP4 is designed to be a high pressure pump to increase atomization of the fuel resulting in a better driving experience on the new LML platform. Unfortunately this set up lacks the volume when compared to the previously used CP3 pump, resulting in a limited power band and short cap on power that this vehicle can be pushed to.

ATS Diesel has designed this Twin Fueler kit to help you receive the best of both worlds with the fuel volume and pressure you need to maximize your driving experience whether it be daily driving, towing, drag racing, or sled pulling!


  • Better atomization
  • Increased throttle response
  • Faster spool up
  • Ability to support demanded fuel quantity
  • Wider RPM operating range
  • Engine Manufacturer: Duramax
  • Make: GM Light Duty
  • Models: 2500/3500
  • Fuel Type: Diesel
  • Engine Designation: LML
  • Sold As: Kit