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 Industrial Injection OE Spec Plus Modified 33% Over Remanufactured CP3 Injection Pump (0986437304SHO) bridges the gap between standard stock replacements and oversized competition stroker units. On factory 5.9L common-rail builds, aggressive street tuning, towing calibrations, or upgraded injectors quickly outpace stock pump delivery around 500 rear-wheel horsepower, triggering rail pressure drop and elevated exhaust gas temperatures (EGTs).

Industrial Injection rebuilds these units in OEM-certified clean rooms using genuine Bosch pump cores, completely replacing all internal reciprocating components with precision-modified high-flow elements. Flowing 33% more fuel volume than a factory stock CP3, this pump maintains rock-solid commanded rail pressure across the full RPM range to reliably fuel street and towing setups producing up to 700 rear-wheel horsepower. Built on the authentic 5.9L architecture with factory-located top fuel ports, it drops directly onto OEM mounting brackets and connects to stock hard lines without custom line bending or conversion fittings.

Key Features & Benefits

• +33% Fuel Displacement Over Stock: Delivers 33% more fuel volume than a standard OEM pump to prevent rail pressure drop during heavy acceleration.
• Supports Up to 700 Rear-Wheel HP: Provides ample high-pressure volume to comfortably fuel aggressive street tunes, tow files, and moderate injector upgrades.
• OE Spec Plus Quality Standards: Remanufactured and calibrated on factory OEM-certified test stands using genuine Bosch internal replacement components.
• New Genuine Bosch FCA Included: Ships with a brand-new, pre-installed Bosch Fuel Control Actuator (MPROP/FCA) to ensure stable idle quality and smooth tuning.
• True 5.9L Direct Drop-In: Retains the factory 5.9L top-port configuration, utilizing stock fuel supply lines, high-pressure rail tubes, and engine timing gear.
• Reduced Exhaust Gas Temperatures: Maintaining peak commanded rail pressure ensures optimal fuel droplet atomization and clean, efficient combustion.

Technical Specifications

• Manufacturer / Brand: Industrial Injection Diesel Performance
• Manufacturer Part Number / SKU: 0986437304SHO
• Alternative Part Numbers: 0986437304SHOSE / 0986437304-SHO / IND0986437304SHO
• Bosch Base Part Number: 0 986 437 304 / 0445020011 / 0445020147
• Pump Series: OE Spec Plus Modified SHO Series
• Displacement / Modification: Modified Internal Fueling (+33% Flow Over Stock)
• Horsepower Rating: Rated for applications up to 700 RWHP
• Truck Platform: 2003–2007 Dodge Ram 2500 & 3500
• Engine Platform: 5.9L 24V Cummins Common-Rail Turbo Diesel
• Core Requirement: None
• Warranty: Industrial Injection 1-Year / Unlimited-Mileage Warranty

Vehicle Fitment & Technical 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 bolt-on replacement for factory gear-driven engine block mounting on 2003–2007 5.9L engines. Compatible with factory fuel rails and hard feed lines.
• Lift Pump Recommendation: To protect the modified pump plungers and ensure adequate supply volume under load, pairing with an aftermarket electric fuel lift pump (such as a FASS or AirDog rated at 100 to 165 GPH) is strongly advised.
• Tuning Optimization: While the factory ECM can adapt to mild demand, custom tuning (HP Tuners, EFI Live, or Smarty) is recommended to optimize injector pulse widths and make full use of the 33% flow increase.