S&S LML Duramax Diesel CP3 conversion kit w/pump – Offroad Use Only – No DPF – No Tuning Required
S&S Diesel Motorsport, the world leader in common-rail diesel injection has developed a solution for CP4.2 high-pressure pump failures that have plagued the LML Duramax engine. The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4.2 with a tried and true, bulletproof CP3 high pressure fuel pump.
CP4 high pressure pumps are the Achilles heel of the LML Duramax engine because of high failure rates, and commonly taking out the entire, very costly, high-pressure system with it (injectors, rails, lines). S&S Diesel Motorsport offers the only CARB-compliant 50 State CP3 conversion available for the LML. This includes all hardware necessary to replace the troublesome CP4 with a bulletproof CP3, requires no tuning changes, and still maintains factory emissions control equipment.
S&S DIESEL (C.A.R.B.) 2011-2016 LML CP3 Conversion Kit with Sportsman Pump
This pump will take the place of your factory CP4 pump and convert it to a much more reliable CP3 pump.
- SPORTSMAN CP3 Pump Capable of up to 650HP
- Bolt on application
- Fully 50 state smog legal replacement
- NO TUNING REQUIRED
- Able to be tuned/modified if desired
Why convert your LML’s Fuel System from a CP4 to a CP3
The stock CP4 is only capable of supporting up to ~500rwhp. A Sportsman is capable of supporting 600+ rwhp in conjunction with the piezoelectric injectors.
The CP4 was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient piezoelectric injectors. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms.