S&S Diesel Motorsport offers the first CARB-compliant (EO #D-756-4) 50 State CP3 conversion available for the LML. This includes all hardware necessary to replace the troublesome CP4 with a …

Fleece LML Duramax CP3 conversion: Upgrade your LML's fueling system with our CP3 pump kit for increased reliability and performance.

WCF-LML Duramax CP3 Conversion High Pressure Line Upgrade Kit Description: - Longer and Larger I.D. High-Pressure Line than Street Series Kit and other CP3 Conversion Kits offered on the market …

This kit allows you to switch from the CP4 injection pump that come from the factory on the 2011-2016 LML Duramax trucks, to an earlier model higher volume CP3 injection pump.

Avoid a costly failure down the road and convert your CP4 to a CP3 with our complete, no tuning required kit for the 2011-2016 LML Duramax platform.

LML Duramax CP3 Conversion Kit with No Tuning Required installation. This kit replaces your problematic CP4.2 with a reliable CP3 pump.

Convert your CP4 to a CP3 and save money down the road with our complete, no-tuning-required solution for the 2011-2016 LML Duramax platform.

Apr 16, 2025 · This blog provides a detailed review guide for the best CP3 conversion kits for LML trucks. These kits improve performance and reliability for diesel engines.

Fleece Performance LML CP3 conversion kits are offered with or without pump and the pump kits come in two different style pumps—a Bosch CP3 injection pump or Bosch CP3 pump with heavy-duty …

Our CP3 Conversion Kit is a direct replacement for the factory CP4 and will not cause check engine lights. No need to spend extra money on custom tuning or programmers, our kit works with the …