Product Description
Upgrade your Cummins fuel system with the S&S Diesel CP3-CU-12-HS. This NEW 12mm High Speed CP3 (6.7L-based) delivers increased displacement and high-RPM efficiency for serious performance builds on 2003–2018 5.9L & 6.7L 24-valve trucks.
- NEW 12mm High Speed CP3 (not reman)
- 6.7L-based architecture for strength and efficiency
- Optimized for high engine speed fueling stability
- Pairs well with upgraded lift/supply pumps and injectors
Fitment
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins (24V)
- 2007.5–2018 Ram 2500/3500 6.7L Cummins (24V)
Note: All S&S CP3 pumps are 6.7L-based. When installing on a 5.9L (2003–2007), you must adapt the high-pressure line/fittings to 6.7L style.
What’s Included
- 1x S&S Diesel CP3-CU-12-HS NEW 12mm High Speed CP3 pump
- Installation instructions (general)
Does not include lines, fittings, controller, or lift pump.
Recommended Parts (CPP Diesel — internal links)
- 5.9L → 6.7L CP3 High-Pressure Fuel Line Adaptation Kit: Fleece FPE-CUMM-CP3-FL-ADPT-KIT
- CP3 Pumps & Components (browse related hardware & electronics): Shop CP3 Pumps & Components
- 13–18 Cummins CP3 Pumps & Components category: CP3 (2013–2018)
- 07.5–12 Cummins CP3 Pumps & Components category: CP3 (2007.5–2012)
- Optional: S&S High-Speed CP3 with SP3000 supply pump (browse S&S CP3+SP options): S&S CP3 + SP3000
Helpful Notes
- Pair with a quality lift/supply pump to prevent CP3 starvation under load.
- For 5.9L trucks, the adapter kit is strongly recommended for correct line geometry and sealing.
Is this pump new or reman?
It is NEW (not remanufactured).
Yes. Because S&S pumps are 6.7L-based, 5.9L applications should use a high-pressure line/fitting adaptation kit to ensure proper fit and sealing.
Yes, but the added capacity is best utilized with upgraded injectors and proper tuning. A healthy lift pump is highly recommended.
No. If you need a matched system, consider CP3 packages that include the SP3000 supply pump, or add your preferred lift pump.
Verify local and federal compliance before installation. Intended for vehicles where legally permitted.
