S&S DIESEL RAM-CP3-14HS 14MM HS CP3 CONVERSION KIT – COMPETITION USE ONLY – FITS 2019–2020 RAM CUMMINS 6.7L 24V (PICKUP)

Built for big fuel and big RPM. The S&S Diesel Motorsport® RAM-CP3-14HS Conversion Kit swaps the failure-prone CP4.2 on 2019–2020 Ram Cummins 6.7L pickups for a brand-new, 14mm High-Speed CP3 (CP3NH-based) with OE-grade hardware and a factory-fit finish. Designed for competition use only, this kit features the S&S proprietary overdrive gear & pilot pre-installed for a true drop-in installation and high-RPM performance.

Fitment

• Vehicle: 2019–2020 Ram 2500/3500 pickups with Cummins 6.7L 24-valve (not recommended for Cab & Chassis).
• Replaces: Factory CP4.2 high-pressure pump with an S&S 14mm High-Speed CP3 (CP3NH base).

Why This Kit

• Brand-new CP3NH-based 14mm HS pump (not reman), internally optimized for durability and high-speed performance.
• Proprietary drive gear & pilot pre-installed for a clean, drop-in install; pump is overdriven ~1.5× engine RPM for high-RPM fueling.
• OE-quality injection-molded ECU mount, quick-connect fittings, and braided supply line for a factory-style look and reliability.

What’s Included

• S&S 14mm High-Speed CP3 (CP3NH base) with proprietary gear & pilot pre-installed.
• OE-style quick-connect fittings and braided supply line.
• OE-quality injection-molded ECU mounting solution.
• High-pressure fuel line (autofrettaged) and hardware as required for 2019–2020 conversions.

Recommended Parts

• Lift Pump (AirDog) – ensure ample low-pressure supply for 14mm output
• Lift Pump (FASS) – alternative premium supply option
• High-Efficiency Fuel Filtration/Water Separation
• Fuel Rail Pressure Monitoring / Performance Monitor
• CP3 Accessories & Hard Lines

Helpful Notes

• This HS (High-Speed) 14mm kit is intended for competition use only. Confirm class rules and fueling requirements before purchase.
• Not recommended for Cab & Chassis applications.

Yes—by replacing the CP4.2 with a brand-new CP3NH-based pump, the system gains the CP3’s proven durability and consistent rail control under load.

HS kits are engineered for high-RPM fueling in competition setups. Many builds pair these with custom calibrations; consult your tuner. (S&S also offers a “No Tune” CP3 option for 2019–2020 if you prefer OE-calibration behavior.)

It includes an OE-quality injection-molded ECU mount, OE-style quick-connects, braided supply line, and a pre-installed proprietary gear/pilot so the pump and hardware integrate like OEM.

S&S lists a 14mm CP3 family (1,850 mm³/rev) with high-speed optimization—designed to sustain delivery at elevated RPM in race use. Exact output depends on the total system and tuning.

This configuration is intended for competition use only. Check local, state, and federal regulations for on-road compliance.