Engineered specifically for 2004.5 through 2007 Dodge Ram 2500 and 3500 trucks powered by the 5.9L 24-valve common-rail Cummins turbo diesel engine (325 HP "600/610" series), the H&S Motorsports Dual High Pressure Fuel Kit Without CP3 (Part # 451004) provides high-volume fuel delivery for high-performance street, towing, and competition builds. When running aggressive performance tuning, compound turbos, or oversized common-rail injectors, a single CP3 pump quickly drains rail pressure at wide-open throttle (WOT), causing extended injection duration, high exhaust gas temperatures (EGTs), and lost horsepower.

The H&S Motorsports system solves high-pressure fuel starvation through a true dual independent rail feed design. While conventional dual-pump systems "T" both pump discharges together into a single restrictive factory inlet port, the HSM kit routes the secondary belt-driven CP3 pump directly into the rear test port of the factory fuel rail. This preserves the primary CP3 pump and factory high-pressure lines in their stock configuration while preventing pressure drop across the rail at high RPM. Designed with a low-mount secondary pump position, the custom serpentine belt routing maintains optimal belt wrap around both the secondary CP3 drive pulley and the factory power steering pump. Sold complete without a CP3 pump, this kit allows builders to install their own stock replacement, modified, or stroker CP3 pump to fuel builds making from 800+ to well over 1,200+ wheel horsepower.

Pulley Finishes & SKU Variants

• Raw Machined Aluminum (SKU: 451004-1): Features a clean, bright machined billet aluminum finish for a classic race-engineered engine bay look.
• Black Anodized (SKU: 451004-2): Coated in a durable, sleek black anodized finish that resists corrosion, road grime, and harsh diesel chemicals.
• Red Anodized (SKU: 451004-3): Finished in a vibrant race red anodize to accent competition engine bays and match aftermarket silicone boot kits.

Key Features & Benefits

• True Dual Independent Rail Feed: Secondary pump feeds the rear of the fuel rail independently, eliminating high-pressure line flow restrictions and pressure imbalances across injectors.
• Supports 800+ to 1,200+ WHP: Even when paired with a standard stock displacement secondary CP3, the dual-pump architecture supplies fuel for 800+ wheel horsepower.
• Keeps Stock CP3 in Factory Location: Retains the OEM primary gear-driven pump and factory high-pressure line in their stock configuration without bending or altering stock hard lines.
• Optimized Low-Mount Geometry: Positions the auxiliary CP3 pump low on the engine to maintain maximum serpentine belt surface contact on both the CP3 pulley and the factory power steering pump.
• Electronic Pump Controller Included: Automatically synchronizes and drives both Fuel Control Actuators (FCAs) to maintain smooth idle quality and commanded fuel rail pressure.
• Complete Installation Hardware: Ships complete with heavy-duty mounting brackets, billet drive pulley, high-pressure lines, custom-formed upper radiator hose, extended serpentine belt, and wiring harness.
• Zero Core Charge: Sold outright as brand-new hardware; requires no core deposit or core return.

Technical Specifications

• Manufacturer / Brand: H&S Motorsports (HSM)
• Base Part Number / SKU: 451004
• Variant SKUs:
  • 451004-1 (Raw Billet Aluminum Pulley)
  • 451004-2 (Black Anodized Pulley)
  • 451004-3 (Red Anodized Pulley)
• Product Type: Dual High Pressure Fuel Injection Installation Kit (CP3 Pump Not Included)
• Rail Feed Configuration: True Dual Independent Fuel Rail Delivery (Rear Port Feed)
• Horsepower Capability: Supports 800+ to 1,200+ Rear-Wheel Horsepower (pump displacement dependent)
• Electronic Controller: Microprocessor-Controlled Dual Pump Module Included
• Kit Contents:
  • Precision Heavy-Duty Steel Pump Mounting Brackets & Fasteners
  • CNC Billet Aluminum Drive Pulley (Selected Finish)
  • Heavy-Duty Extended Serpentine Belt
  • High-Pressure Seamless Steel Fuel Lines & Port Fittings
  • Dual Pump Electronic Controller & Weatherpack Wiring Harness
  • Custom Formed Upper Radiator Hose
• Truck Platform: 2004.5–2007 Dodge Ram 2500 & 3500
• Engine Platform: 5.9L 24V Cummins Common-Rail Turbo Diesel (600/610 Series)
• Core Requirement: None
• Warranty: H&S Motorsports Limited Warranty

Vehicle Fitment & Technical Installation Notes

• 2004.5–2007 Dodge Ram 2500 – 5.9L Cummins 24V Common-Rail Diesel
• 2004.5–2007 Dodge Ram 3500 – 5.9L Cummins 24V Common-Rail Diesel
• Fits Model Years: 2004.5, 2005, 2006, 2007
• 2003–2004 Early Platform Fitment: Fits 2004.5–2007 engines directly. Can work on 2003–early 2004 engines with minor bracket and fuel rail port provisions. (For customers wanting a complete kit that includes a brand-new Bosch OEM pump pre-packaged in the box, reference HSM SKU 451003).
• CP3 Pump Requirement: This SKU does not include a high-pressure pump. The customer must supply a standard Cummins/Bosch common-rail CP3 injection pump (OEM replacement, modified, or stroker).
• Lift Pump Prerequisite: An aftermarket electric fuel lift pump system rated at 165 to 200+ GPH (such as FASS Titanium or AirDog II-5G) is mandatory to provide adequate low-pressure supply volume and eliminate pump cavitation.
• Cooling System Note: The included pre-formed upper radiator hose replaces the factory hose to clear the secondary CP3 pump mounting bracket and belt path.