Engineered specifically for 2003 through 2007 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 24-valve common-rail Cummins turbo diesel engine, the Genuine Bosch Factory Remanufactured CP3 Fuel Injection Pump (0 986 437 304) is the definitive OEM benchmark for restoring fuel system performance. As the original Tier-1 equipment designer and manufacturer of the common-rail high-pressure injection system used on Cummins diesels, Bosch rebuilds these pumps to exact OE vehicle assembly-line specifications.

High-mileage stock CP3 pumps suffer from internal plunger micro-scoring, pressure leakage past internal check valves, and solenoid fatigue within the fuel metering actuator. These failures trigger extended crank times, hard-start or no-start conditions, high return-fuel volume, sluggish acceleration, and diagnostic trouble code P0087 (fuel rail pressure too low). Every 0986437304 pump is remanufactured directly in certified Bosch production facilities using 100% genuine Bosch internal replacement wear components, pre-installed with a new genuine Bosch Fuel Control Actuator (FCA / MPROP), and calibrated on proprietary Bosch computerized test benches to guarantee original factory efficiency and durability.

Key Features & Benefits

• Original Equipment Manufacturer (Tier-1 OEM): Built and calibrated directly by Bosch to the exact engineering standards originally supplied to Cummins and Chrysler/Mopar.
• 100% Genuine Bosch Internal Wear Parts: Plungers, precision check valves, internal seals, and high-pressure seats are replaced with factory-fresh Bosch components.
• Pre-Installed Genuine Bosch FCA / MPROP: Eliminates common rail pressure hunting, idle surge, and hard-starting issues caused by worn or sticking fuel metering solenoids.
• Factory Flow Calibration: Calibrated to strict Cummins/Bosch output parameters to restore original engine horsepower, fuel efficiency, and emissions compliance.
• Direct Drop-In 5.9L Geometry: Features the authentic 5.9L top-mount fuel port and mounting flange for direct bolt-on installation with factory lines, brackets, and drive gear.
• End-of-Line Validated: Every pump is tested and verified for delivery volume and leak-free pressure holding across the entire operating RPM range.

Technical Specifications

• Manufacturer / Brand: Bosch Automotive Aftermarket
• Manufacturer Part Number / SKU: 0 986 437 304 / 0986437304
• OE Cross-Reference Numbers (Mopar / Chrysler): R5143425AA, 5143425AA, R5191780AD, 5191780AA, 5191780AB, 5191780AC
• OE Cross-Reference Numbers (Cummins): 5264247, 5264246, 5264246RX, 4934407, 3972814, 3972814NX, 3972814RX
• Bosch New-Unit Production Cross-Reference: 0 445 020 011 / 0 445 020 039 / 0 445 020 147
• UPC: 028851411548
• Pump Series: Bosch CP3 Common-Rail High-Pressure Fuel Injection Pump
• Displacement / Output: Factory OEM Specification (3.05 LPM Nominal Delivery)
• Metering Actuator: Brand-New Pre-Installed Genuine Bosch Fuel Control Actuator (FCA / MPROP)
• Truck Platform: 2003–2007 Dodge Ram 2500 & 3500
• Engine Platform: 5.9L 24V Cummins Common-Rail Turbo Diesel (ISB 5.9L)
• Core Requirement: None
• Warranty: Bosch 1-Year / Unlimited-Mileage Limited Warranty

Vehicle Fitment & Installation Notes

• 2003–2007 Dodge Ram 2500 – 5.9L Cummins 24V Common-Rail Diesel (Standard & High Output)
• 2003–2007 Dodge Ram 3500 – 5.9L Cummins 24V Common-Rail Diesel (Standard & High Output)
• Fits Model Years: 2003, 2004, 2004.5, 2005, 2006, 2007
• Fitment Notice: Direct bolt-on replacement for the factory gear-driven engine block location on 2003–2007 5.9L common-rail engines. Does not require fuel line adaptation. Reuses the factory drive gear and mounting nuts.
• Installation Tip: Clean all debris and residual oil out of the front timing gear cover cavity before installing. Replace the mounting snout O-ring and lubricate it with clean engine oil. Torque the pump drive gear retaining nut to factory Cummins specifications (105 ft-lbs). Prime the low-pressure fuel supply system using key-on cycles before cranking to ensure the pump plungers are fully lubricated prior to engine startup.