Product Description
Upgrade your VP44 Cummins fuel supply with the AirDog® Raptor RP-4G-150 (R4SBD052). This 150 GPH frame-rail mounted lift pump is engineered specifically for 1998.5–2002 Dodge Ram 2500/3500 5.9L 24-valve trucks that do not have the in-tank retrofit pump. It delivers stable, adjustable pressure to protect your VP44 and support mild to moderately modified builds.
- 150 GPH flow with built-in adjustable regulator (no return line required)
- Frame-rail sandwich plate mount with plug-and-play fuel lines & fittings
- Feeds clean fuel to the OEM filter housing; improves reliability & throttle response
- Designed for trucks that retain the block-mounted OEM lift pump location (no in-tank pump)
Vehicle Fitment
1998.5–2002 Dodge Ram 2500/3500 with 5.9L 24-Valve Cummins (VP44) – trucks without the in-tank lift pump retrofit.
Cross-Reference / Alternatives (Airdog only)
- AIRDOG R4SBD360 – RP-4G-150 for trucks with in-tank lift pump (same years)
- AIRDOG R4SBD355 – RP-4G-100 for trucks with in-tank pump
- AIRDOG R3SBD150 (FRRP-150) – factory replacement style, 150 GPH
- AIRDOG R3SBD100 (FRRP-100) – factory replacement style, 100 GPH
- AIRDOG WS100 – replacement water separator filter
Installation Instructions
Download the official AirDog Raptor-4G (1998.5–2002 Cummins without in-tank pump) install manual here: RP-4G-100/150 1998.5–2002 Cummins (No In-Tank) Install PDF
Specifications for airdog R4SBD052
| Brand | AirDog |
|---|---|
| Part Number | R4SBD052 |
| Flow Rate | 150 GPH |
| System Type | Raptor 4G (lift pump, adjustable regulator) |
| UPC | 813094010523 |
| GTIN (EAN/UPC) | 813094010523 |
| Shipping Method | Standard Ground |
| Shipping Weight | ~21 lb |
| Prop 65 Warning | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
FAQ
Will this work if my truck has the in-tank lift pump retrofit?
No. Use the in-tank compatible kits such as R4SBD360 (150 GPH) or R4SBD355 (100 GPH).
Do I need to add a return line with the Raptor-4G?
No. The RP-4G-150 uses an internal adjustable regulator and does not require a return line.
What fuel pressure should I target for a stock VP44?
Typically 15–17 PSI at idle and no less than ~10 PSI under load is recommended. Always verify with a quality fuel pressure gauge.
Which filters does this system use?
Service with AirDog elements (e.g., WS100 water separator) and the appropriate fuel filter per your AirDog/Raptor setup.
Is tuning required after installation?
No tuning is required. Verify pressure with a gauge and adjust the regulator as needed within spec.
