Product Description
S&S Diesel CP3-CU-6.7 is a brand-new 6.7L-based Bosch CP3 high-pressure pump engineered for 2003–2018 Ram Cummins 5.9L/6.7L applications. Built on the 6.7C architecture for improved high-rpm control and durability, it’s an ideal OE-grade replacement or foundation for performance builds needing stable rail pressure across the usable rev range. (6.7L-based pumps require minor line changes when installed on 5.9L—see Recommended Parts.)
Fitment
- 2003–2007 Ram 2500/3500 5.9L Cummins (requires 5.9→6.7 CP3 line adaptation noted below)
- 2007.5–2018 Ram 2500/3500 6.7L Cummins
6.7L-based CP3 pumps are commonly adapted to 5.9L trucks; minor fuel line changes are required on 5.9L applications.
General pump family/flow data for S&S Cummins CP3 variants available in S&S technical materials.
What’s Included
- New S&S Diesel CP3-CU-6.7 6.7L-based high-pressure pump
- Assembled and calibrated on new CP3 core (no reman internals)
- Built on 6.7C architecture for stable rail pressure and high-speed operation
Recommended Parts (Internal Links)
- 5.9L ➜ 6.7L CP3 High-Pressure Line Adaptation Kit (required on 5.9 installs): Fleece FPE-CUMM-CP3-FL-ADPT-KIT
- FCA/MPROP (5.9L CP3): Cummins 4932457 FCA or Exergy E05 20005 FCA/MPROP
- Fuel Filtration (recommended): Mopar Severe Duty Filter Kit 07.5–12
- Fuel Injection Lines / Hardware (6.7L): 07.5–12 6.7L Fuel System
- CP3 Pumps & Components (03–07 5.9L): 03–07 5.9L Fuel System
- CP3 Injection Pump Categories: 07.5–18 CP3 Pumps • 13–18 CP3 Pumps • 03–07 CP3 Pumps/Components
- For 2019–2020 CP4➜CP3 conversions (reference kits): S&S RAM-CP3-14HS • 19–24 CP3 Pumps & Conversions
Helpful Notes
- 6.7C-based CP3 on 5.9L requires the HP line adaptation kit (linked above) due to outlet orientation and line geometry.
- S&S CP3 family performance and flow behavior by size (SS, 10mm, 12mm, 14mm) is documented in S&S fuel system planner/pump data sheets.
FAQ
Will this 6.7L-based CP3 work on my 2003–2007 5.9L?Yes—this pump is designed to be used across 2003–2018. On 5.9L applications you’ll need the 5.9→6.7 high-pressure line adaptation kit (linked above).
Is this pump remanufactured?No, CP3-CU-6.7 is a new pump built on the 6.7C platform. See S&S technical materials for the Cummins CP3 lineup.
Do I need tuning with this pump?No tuning is typically required for a stock-output 6.7C-based replacement pump. S&S documents tuning-free rail pressure control on their OE-grade CP3 conversions and pump families.
What else should I replace during installation?We recommend fresh filtration, inspection/replacement of the FCA/MPROP, and verifying HP line condition. See the Recommended Parts links above for CPP-curated options.
