Description
Overview
The FASS RK04 Direct Replacement System Relocation Kit is engineered specifically for the 2003-2004 Dodge Cummins to reposition your DRP Series fuel system further back on the frame, closer to the fuel tank. By shortening the distance the system has to pull fuel from the tank, the RK04 transforms how your fuel is delivered — moving your setup from a long, vacuum-heavy draw to a shorter, pressure-driven feed straight to your Cummins engine.
Factory-style systems most often fail for one simple reason: every fuel system performs better when it is pushing fuel under pressure rather than straining to pull it under vacuum. This relocation kit addresses that root cause head-on. Placing the DRP system nearer the fuel tank reduces the vacuum load on the pump and lets it do what it does best — push fuel under pressure the rest of the way to the motor.
Key Benefits
Mounting your Direct Replacement System closer to the source means less vacuum stress, more consistent fuel delivery, and a setup designed to help your motor last longer. For 2003-2004 24 Valve Cummins owners running a DRP Series system, the RK04 is a purpose-built solution that complements the pump rather than fighting against it.
- Relocates your DRP fuel system closer to the fuel tank for pressure-fed delivery
- Reduces the distance the system pulls fuel under vacuum
- Helps address the number one reason factory-style systems fail
- Includes the wiring harness needed for the relocation
- Includes hose for a complete installation
- Sold as a complete kit (Part No. RK04)
What’s Included
The RK04 ships as a complete relocation kit and includes both the wiring harness and hose required to move your DRP Series system rearward. As a Direct Replacement System accessory, it is intended for stock applications, giving you a clean, purpose-matched way to optimize the position of your fuel system without piecing together components on your own.
Fitment
This kit is built for 2003-2004 Cummins Truck/SUV applications running the 24 Valve engine. It is designed to work hand-in-hand with the FASS DRP Series Direct Replacement System, relocating that system closer to the fuel tank on your 2003-2004 Dodge Cummins.
If you’re installing or upgrading a DRP system on your 2003-2004 Cummins, the RK04 Relocation Kit is the straightforward way to place your fuel system where it can perform at its best — pushing fuel under pressure, reducing vacuum strain, and supporting long-term reliability from your Cummins engine.
