Grizzly IPVR16X Remanufactured VP44 Fuel Injection Pump – 5.9L 24V Cummins Cab & Chassis

Restore factory-level fuel delivery and reliability to your 5.9L 24-valve Cummins with the Grizzly IPVR16X remanufactured VP44 injection pump.

This Bosch-style electronic rotary distributor pump is built specifically for cab & chassis and medium-duty/midrange applications. It uses genuine Bosch OE components and is end-of-line tested to original equipment specifications so it delivers precise high-pressure fuel, correct metering, and proper injection timing.

The VP44 generates the high pressure needed for proper atomization, meters the exact fuel quantity for each cycle, distributes it to the cylinders at the right moment, and varies timing with engine speed. The result is restored starting, smoother operation, better efficiency, and OEM-level emissions compliance.

Key Features

• Constructed with authentic Bosch OE parts for durability
• Fully tested to OE specifications for fuel delivery, timing, and emissions
• Direct-fit replacement for stock performance
• Designed for demanding commercial and cab/chassis use

Fitment

Fits 5.9L 24-valve Cummins engines in 2000–2001 cab & chassis applications (and similar 1998–2002 midrange/medium-duty trucks). Common cross-references include Bosch 0470506029, 0470506003, 0470506012, 0470506026 and Cummins 3937672, 3964555.

This is not the correct pump for standard Dodge Ram pickup trucks. Always confirm your original part number before ordering.

Important Notes

• Overflow check valve is not included
• Core charge applies.
• Tapping or modifying the PSG (pump control electronics) voids the warranty.
• Strongly recommended: replace the lift pump and fuel filter at the same time. Low supply pressure is the leading cause of VP44 failure because the pump relies on fuel for cooling and lubrication.