Product Description
S&S DIESEL RAM-CP3-KIT — CP3 CONVERSION KIT WITHOUT PUMP — FITS 2019–2020 RAM 2500/3500 6.7L CUMMINS (NOT C&C)
Eliminate the CP4.2 weak link on your 2019–2020 Ram 2500/3500 6.7L Cummins with the S&S Diesel RAM-CP3-KIT (kit only, no pump included). This no-tune, OE-grade conversion uses proven CP3 hardware and factory-style components for a clean, reliable install and rock-solid rail control—without custom calibration.
- No-tune required, factory drivability
- OE-quality molded ECU mount, quick-connect fittings, braided supply line
- Autofrettaged high-pressure line and CP3 drive components included
- Designed for long-term durability versus the CP4.2
- CARB EO D-756-5 compliant configuration when paired with the appropriate CP3 pump
Fitment
- 2019–2020 Ram 2500/3500, 6.7L Cummins 24V (factory CP4.2 trucks)
- Not suggested for Cab & Chassis configurations
Reference: S&S Diesel RAM CP3 conversion details and CARB EO coverage for the 2019–2020 platform.
What’s Included
- Proprietary CP3 drive gear, pilot, and mounting flange (for CP3 interface)
- OE-quality injection-molded ECU mount
- OE-style quick-connect fittings and braided supply line
- Autofrettaged high-pressure fuel line
- All required hardware and install components for the conversion (pump sold separately)
Recommended Parts (Internal Links)
- CP3 Pump Options (Stock & 12mm) — choose the correct CP3 to pair with this kit for CARB-compliant, no-tune operation.
- More S&S Diesel Products — injectors, pumps, and durability solutions.
- Upgraded Fuel Filtration — protect your new CP3 and injectors.
- Lift Pumps & Supply Pumps — ensure consistent low-pressure supply under load.
- High-Pressure Injector Lines — inspect/replace as needed during conversion.
Helpful Notes
- This is the kit without pump. You must supply a compatible CP3.
- No custom tuning required when used as intended; maintains factory driveability.
- CARB EO D-756-5 applies to the S&S no-tune CP3 conversion for this platform. Verify your configuration for compliance.
FAQ
Will this kit work on my 2019–2020 Ram 6.7L without tuning?Yes—the S&S design provides tuning-free rail pressure control when paired with the correct CP3 pump, preserving factory drivability.
Does this include the CP3 pump?No. This is the RAM-CP3-KIT without pump. Add a compatible CP3 separately (stock or 12mm) based on your goals.
Is it CARB compliant?The S&S no-tune CP3 conversion for 2019–2020 Ram 6.7L carries CARB EO D-756-5. Confirm your exact setup (truck model and pump) for compliance.
Why convert from CP4.2 to CP3?The CP4.2 has known durability concerns that can lead to expensive system contamination on failure. The CP3 has a proven track record under high pressure/RPM and harsh environments.
What trucks are not supported?Cab & Chassis models are not suggested for this kit.
