Product Description
S&S DIESEL RAM-CP3-12HS 12MM CP4 TO CP3 CONVERSION KIT FOR 2019-2020 RAM 2500/3500 6.7L CUMMINS
The S&S Diesel RAM-CP3-12HS CP4-to-CP3 conversion kit replaces the factory CP4.2 injection pump with a high-performance 12mm High-Speed CP3NH-based pump for 2019-2020 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine.
Designed for high-performance and competition-oriented applications, this conversion kit improves fuel system durability and delivers increased fueling capability compared to the factory CP4 system.
The RAM-CP3-12HS kit includes a brand-new Bosch CP3NH-based 12mm High-Speed CP3 pump featuring proprietary S&S Diesel modifications, a pre-installed drive gear and pilot assembly, OE-style quick-connect fittings, braided supply line, and an autofrettaged high-pressure fuel line.
This kit is engineered for high-RPM fueling performance with the CP3 pump operating at approximately 1.5 times engine RPM.
FEATURES
- 12mm High-Speed CP3NH-based injection pump
- Designed to replace factory CP4.2 injection pump
- Brand-new pump assembly – not remanufactured
- Proprietary S&S Diesel internal modifications
- Pre-installed drive gear and pilot assembly
- OE-style quick-connect fittings
- Braided fuel supply line included
- Autofrettaged high-pressure fuel line included
- Improved fuel system durability and performance
- Competition-oriented high-flow fuel system upgrade
FITMENT
- 2019 Ram 2500 6.7L Cummins
- 2019 Ram 3500 6.7L Cummins
- 2020 Ram 2500 6.7L Cummins
- 2020 Ram 3500 6.7L Cummins
Fitment Note: Compatible with both Standard Output (SO) and High Output (HO) 6.7L Cummins applications.
WHAT'S INCLUDED
- S&S 12mm High-Speed CP3 pump
- Pre-installed proprietary drive gear and pilot
- OE-grade ECU mount
- OE-style quick-connect fittings
- Braided fuel supply line
- Autofrettaged high-pressure fuel line
- CP3 data sheet and documentation
BENEFITS
- Eliminates factory CP4 reliability concerns
- Supports high-horsepower fuel demands
- Improves long-term fuel system durability
- Provides increased fueling capability
- Maintains OE-style installation quality
- Designed for high-RPM fuel delivery performance
RECOMMENDED SUPPORTING PARTS
- 2019-2024 Cummins CP3 conversion components
- 2019-2024 Cummins fuel system upgrades
- Fleece under-bed fuel filter assembly
- S&S Diesel fuel system accessories
- Custom tuning for CP3 conversion applications
INSTALLATION NOTES
- Professional installation recommended
- Tuning is required for proper operation
- Verify fuel system cleanliness before installation
- Inspect injectors and fuel lines during installation
- Follow all S&S Diesel installation procedures
- Emissions compliance varies by application and location
SPECIFICATIONS
- Brand: S&S Diesel Motorsport
- Part Number: RAM-CP3-12HS
- Product Type: CP4-to-CP3 conversion kit
- Pump Type: 12mm High-Speed CP3NH
- Engine Compatibility: 6.7L Cummins diesel
- Vehicle Compatibility: 2019-2020 Ram 2500 and 3500
- Output Compatibility: Standard Output and High Output
- Pump Condition: Brand new
- Drive Ratio: Approximately 1.5x engine RPM
- Fuel Line Included: Yes
- Quick Connect Fittings Included: Yes
- Tuning Required: Yes
- Application Type: Performance and competition use
- Condition: New
FAQ
Do I need tuning with the 12mm HS CP3 conversion kit?
Yes. Custom tuning is required for proper fuel control and drivability with the 12mm High-Speed CP3 system.
What makes this more reliable than the factory CP4?
The CP3 fuel pump platform is widely known for improved durability and reliability compared to the factory CP4 system used in many diesel applications.
Will this fit both SO and HO Cummins engines?
Yes. This kit is compatible with both Standard Output and High Output 6.7L Cummins engines for 2019-2020 Ram trucks.
Is this a remanufactured pump?
No. The RAM-CP3-12HS kit includes a brand-new CP3NH-based pump with S&S Diesel modifications.
Does this kit include all required installation hardware?
Yes. The kit includes the CP3 pump, drive gear, fittings, braided line, high-pressure fuel line, and installation-related components.
