Engineered specifically for 2003 through 2007 Dodge Ram 2500 and 3500 trucks powered by the 5.9L 24-valve common-rail Cummins turbo diesel engine, the Dynomite Diesel Products (DDP) Stock Remanufactured CP3 Injection Pump (CP3-304) restores proper high-pressure fuel rail delivery to factory specifications. Over hundreds of thousands of miles, factory CP3 pumps suffer from internal plunger bore wear, check valve fatigue, and electrical failure of the metering solenoid, causing hard-start conditions, long crank times, high return rates, and low-rail-pressure trouble codes (such as P0087).

Dynomite Diesel applies the same rigorous quality control and assembly standards from their high-output competition injector line to their stock replacement fuel components. Each CP3-304 pump is completely disassembled, ultrasonic cleaned, inspected, and rebuilt using genuine OE-quality internal seals and reciprocating elements. Crucially, every pump ships complete with a brand-new pre-installed genuine Bosch Fuel Control Actuator (FCA / MPROP) and undergoes rigorous end-of-line testing on calibrated test benches, providing an affordable, OE-reliable solution to restore crisp starting and smooth stock-level power delivery.

Key Features & Benefits

• Factory OE Specification Flow: Precision calibrated to match genuine Cummins/Bosch flow and pressure tables for 100% factory reliability and fuel economy.
• Brand-New Genuine Bosch FCA Included: Eliminates erratic idle surge, fuel pressure hunting, and no-start issues caused by tired or stuck metering valves.
• Rebuilt to Dynomite Diesel Standards: Assembled in controlled clean-room environments using fresh precision internal seals and high-pressure check valves.
• 100% Direct-Fit Drop-In Installation: Retains the factory 5.9L top-mount fuel port and OEM bolt pattern, allowing direct connection to factory fuel lines, gear train, and brackets.
• Bench-Tested & Validated: Fully validated on computerized test benches to verify target rail pressure generation across all engine speeds.
• Cost-Effective OEM Alternative: Delivers OE-grade durability without the steep price tag of a brand-new pump from the dealer counter.

Technical Specifications

• Manufacturer / Brand: Dynomite Diesel Products (DDP)
• Manufacturer Part Number / SKU: CP3-304
• Alternative Part Numbers: DDPCP3-304 / DDP-CP3-304 / CP3304
• OE / Bosch Cross-Reference Numbers: 0 986 437 304 / 0445020011 / 0445020147 / 5264247 / R5143425AA
• Pump Series: DDP Stock Replacement Remanufactured CP3 Series
• Displacement / Output: Standard OE Displacement & Flow (Stock Replacement)
• Actuator Hardware: Brand-New Pre-Installed Bosch Fuel Control Actuator (FCA / MPROP)
• Truck Platform: 2003–2007 Dodge Ram 2500 & 3500
• Engine Platform: 5.9L 24V Cummins Common-Rail Turbo Diesel
• Core Requirement: Core Return Required (Standard Bosch 5.9L CP3 Core Deposit)
• Warranty: Dynomite Diesel Products 1-Year Manufacturer Warranty

Vehicle Fitment & Installation Notes

• 2003–2007 Dodge Ram 2500 – 5.9L Cummins 24V Common-Rail Diesel
• 2003–2007 Dodge Ram 3500 – 5.9L Cummins 24V Common-Rail Diesel
• Fits Model Years: 2003, 2004, 2004.5, 2005, 2006, 2007
• Fitment Notice: Engineered specifically for 2003–2007 5.9L Dodge Cummins applications. Reuses the factory drive gear and mounting studs. Note: If a brand-new unit with no core charge is preferred, reference DDP SKU NCP3-304.
• Installation Tip: Clean the front timing gear case cavity thoroughly before installation. Inspect the pump drive gear nut and torque to factory Cummins specifications (105 ft-lbs). Prime the low-pressure fuel system completely before cranking to prevent dry-scuffing internal pump plungers.