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 Industrial Injection Dragon Fire 85% Over 10mm Remanufactured CP3 Injection Pump (0986437304DF / 0986437304DFSE) is designed to supply high-demand common-rail fuel systems without dropping rail pressure. The stock Bosch CP3 fuel pump reaches its volumetric limit around 500 to 550 horsepower, leading to rail pressure drop and lean combustion conditions when paired with aggressive race tuning or oversized performance injectors.

Built on genuine Bosch factory remanufactured cores in OEM-certified clean rooms, the Dragon Fire 85% pump replaces all critical internal reciprocating hardware with high-precision 10mm stroker components. Industrial Injection applies proprietary MicroBlue friction reduction and Black DLC (Diamond-Like Carbon) coatings to internal wear components, hardened to a 60/65 Rockwell standard to prevent galling, wear, and heat buildup under high system pressures. This modified pump delivers up to 85% more fuel volume than stock, easily sustaining commanded rail pressure on street, towing, and competition trucks making up to 800+ rear-wheel horsepower.

Key Features & Benefits

• +85% Fuel Flow Delivery: Supplies 85% more volume than a factory stock 5.9L CP3 to eliminate rail pressure drain under wide-open throttle (WOT).
• 10mm Stroker Internal Assembly: Enlarged eccentric shaft and precision-ground plungers provide significant displacement gains without sacrificing street drivability.
• MicroBlue & Black DLC Coatings: High-tech low-friction surface treatments dramatically reduce parasitic drag and defend against high-pressure friction wear.
• 60/65 Rockwell Hardened Components: Ensures structural rigidity and galling resistance, extending service life in demanding high-pressure diesel environments.
• Supports Up to 800+ Horsepower: Delivers adequate fuel volume to support up to 200 additional horsepower over a standard pump depending on injector size and tuning.
• Drop-In 5.9L Architecture: Built on the genuine 5.9L Cummins CP3 platform with standard top fuel ports for direct fitment to factory fuel lines and bracketry.

Technical Specifications

• Manufacturer / Brand: Industrial Injection Diesel Performance
• Manufacturer Part Number / SKU: 0986437304DF
• Alternative Part Numbers: 0986437304DFSE / 0986437304-DF / IIS0986437304DF
• Bosch Base Part Number: 0 986 437 304 / 0445020011 / 0445020147
• Pump Series: Dragon Fire Performance Modified CP3 Series
• Displacement / Stroke: 10mm High-Displacement Stroker Assembly (+85% Flow)
• Surface Treatments: MicroBlue Coating & Black DLC (Diamond-Like Carbon)
• Horsepower Rating: Recommended for applications up to 800+ RWHP
• 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 CP3 Core Return Policy)
• Warranty: Industrial Injection 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: Direct replacement for factory 5.9L Common Rail CP3 pumps. Designed for the factory gear-driven engine block location.
• Fuel Supply & Tuning Requirement: Custom ECM calibration (tuning) is strongly recommended to optimize high-pressure rail delivery and balance Fuel Control Actuator (FCA) duty cycles. An aftermarket low-pressure electric fuel lift pump (such as a FASS or AirDog rated at 150 GPH or higher) is required to maintain positive inlet pressure and prevent pump cavitation.