Product Description
Stop CP4 failures before they start. The S&S Diesel Motorsport® RAM-CP3-NOTUNE kit replaces the 2019–2020 Ram 6.7L Cummins CP4.2 with a brand-new, S&S-calibrated Bosch CP3NH pump and OE-grade hardware—no tuning required and 50-state legal (CARB EO #D-756-5).
Fitment
- 2019–2020 Ram 2500/3500, 6.7L Cummins 24-valve
- Not suggested for Cab & Chassis (C&C) applications.
- CARB EO: D-756-5 (50-state legal).
Why This Kit
- Brand-new Bosch CP3NH base pump, internally modified by S&S for durability and high-speed performance.
- Tuning-free rail pressure control; retains emissions equipment.
- OE-style lines, fittings, and ECU mount for a factory-like install.
What’s Included
- S&S calibrated Bosch CP3NH pump (pre-installed proprietary drive gear & pilot)
- OE-style quick-connect fittings & braided supply line
- Autofrettaged high-pressure fuel line
- OE-quality injection-molded ECU mount
- All required hardware & instructions
Recommended Parts (Internal links only)
- Fuel Lift Pump Systems – AirDog®
- Fuel Lift Pump Systems – FASS®
- High-Pressure Fuel Lines & Seals (Fuel System)
- More S&S Diesel Motorsport® Components
- Fresh Fuel/Water Separator & Filters
Helpful Notes
- For owners who already have a CP3, S&S sells an install-only kit (RAM-CP3-KIT).
- High-speed competition pump options (10mm/12mm/14mm) have RPM limits; see S&S pump speed guidance if upgrading later.
No. This kit is engineered for tuning-free rail pressure control and retains factory emissions equipment.
Is this kit legal in all 50 states?Yes. It carries CARB Executive Order D-756-5 for 2019–2020 RAM 6.7L applications.
Does it fit Cab & Chassis trucks?It is not suggested for C&C models. Some resellers note increased cam-gear noise on C&C when using CP3, even though it is not a mechanical issue.
What’s the difference between RAM-CP3-NOTUNE and RAM-CP3-KIT?RAM-CP3-NOTUNE includes the calibrated CP3 pump and full hardware; RAM-CP3-KIT is the install kit for customers who already have a CP3.
Why convert away from the CP4.2?The CP4.2 has a history of premature failure; S&S’s solution replaces it with a proven CP3 for durability and reliability.
