Product Description
AIRDOG R4SBD361 RP-4G-150 is the in-tank Raptor 4G 150 GPH lift pump engineered for the 2003–2004 Dodge Ram 2500/3500 5.9L Cummins 24V (CP3). The frame-rail-mounted pump works with the included Fuel Module Upgrade Kit to draw fuel through a factory-style 1/2" bulkhead fitting, bypassing the stock in-tank lift pump for stronger, steadier supply. Internal regulation means no return line required, and the 4G motor delivers quiet, reliable performance for stock to moderately modified trucks.
Vehicle Fitment
- 2003–2004 Dodge Ram 2500/3500, 5.9L Cummins 24V (common rail), trucks equipped with the factory in-tank fuel pump.
Why Choose This Kit
- High-flow 150 GPH gerotor design supports mild performance upgrades.
- Built-in adjustable regulator; simplified plumbing without a return line.
- Includes in-tank module upgrade hardware for a clean, OE-style pickup.
- Designed for quiet operation and long service life.
Cross-Reference / Alternatives (Airdog only)
- Need 100 GPH for closer-to-stock builds? See AIRDOG R4SBD356 RP-4G-100 (03–04 in-tank).
- Have a 2004.5–2018 Cummins? See AIRDOG R4SBD053 RP-4G-150 (04.5–18).
- Running a 1998.5–2002 VP44 truck with in-tank pump? See AIRDOG R4SBD360 RP-4G-150 (98.5–02 in-tank).
- Want full air/fuel separation with in-tank pickup on 98.5–04? See AIRDOG A4SPBD153 FP-100-4G (98.5–04 in-tank).
- Prefer the II-5G platform with in-tank pickup (98.5–04)? See AIRDOG A7SPBD354 II-5G DF-100-5G (98.5–04 in-tank).
Installation Instructions
- PureFlow AirDog Raptor-4G 100/150 GPH (2003–2004 Cummins, with in-tank) Install Manual (PDF): Download
- Browse more AirDog manuals: PureFlow Resources
FAQ
Will this replace the factory in-tank lift pump on my 2003–2004 Cummins?
Yes. The included Fuel Module Upgrade Kit draws through a 1/2" bulkhead fitting and bypasses the OE in-tank lift pump while the Raptor-4G mounts to the frame rail.
Do I need to run a return line?
No. This RP-4G-150 system uses internal regulation and does not require a return line.
How much power can 150 GPH support?
It’s ideal for stock to moderately modified builds. If you’re planning bigger injectors or compounds, consider stepping up to an AirDog II-5G system.
Is a pressure gauge recommended?
Yes—monitor base pressure at the filter housing after install to confirm regulator setting and line routing.
| Field | Value |
|---|---|
| Brand | Airdog (PureFlow) |
| Part Number | R4SBD361 (RP-4G-150) |
| UPC | 813094013289 |
| GTIN | 813094013289 |
| Flow Rate | 150 GPH |
| Mounting | Frame rail (sandwich plate), with in-tank module upgrade |
| Shipping Info | Free Shipping; Package dims approx. 13.5" W × 7.0" H × 12.0" D |
| Regulation | Built-in adjustable regulator; no return line required |
| Prop 65 | This product can expose you to chemicals including fuel and fuel combustion products known to the State of California to cause cancer and birth defects or other reproductive harm. See www.P65Warnings.ca.gov. |
| Installation Manuals | Raptor-4G 100/150 (03–04 with in-tank) PDF | All Airdog manuals |
| Price (for reference) | $529.00 (subject to change) |
