Product Description
Upgrade the weak factory lift pump on your 1992–2000 Chevy/GMC 6.5L (Detroit Diesel) with the AirDog® Raptor-4G RP-150. This frame-mounted, internally regulated 150 GPH lift pump delivers consistent supply pressure to the injection pump, improving throttle response and fueling stability under load. The 4G motor uses a four-bearing design for quiet, long-lasting performance.
Vehicle Fitment
- 1992–2000 Chevrolet & GMC 1500/2500/3500 with 6.5L Diesel (Detroit Diesel)
- Direct-fit replacement lift pump; mounts to frame using sandwich plate system
Cross-Reference / Alternatives (AirDog only)
Looking for a filtered Air/Fuel Separation system or different flow rate for the same platform? Consider these AirDog options:
- AIRDOG A4SPBC184 FP-100-4G (100 GPH) — 1992–2000 GM 6.5L
- AIRDOG A4SPBC187 FP-150-4G (150 GPH) — 1992–2000 GM 6.5L
- AIRDOG A7SPBC258 II-5G DF-100-5G (100 GPH) — 1992–2000 GM 6.5L
- AIRDOG A7SABC508 II-5G DF-165-5G (165 GPH) — 1992–2000 GM 6.5L
- AIRDOG R1SBU371 RAPTOR 150 GPH (17 PSI) — Universal Pump Only
- AIRDOG R1SBU373 RAPTOR 150 GPH (55 PSI) — High-Pressure Universal Pump Only
What’s Included
- Raptor-4G 150 GPH lift pump assembly (internally regulated; no return line required)
- Frame-mount sandwich plate & hardware
- Wiring harness, fittings, and hose (application-specific)
- Instructions (see digital link below)
Installation Instructions
Download the official AirDog PDF for the RP-4G-100/150 (1992–2000 Chevy Diesel 6.5L) here: PureFlow AirDog Raptor-4G 100/150 Install Manual (PDF)
Why Buy from CPP Diesel
- GM 6.5L experts — we can confirm fitment by VIN
- Fast shipping and real tech support
- All links above point to genuine AirDog products on cppdiesel.com
FAQ
Will this pump work with stock injection systems on the 6.5L?
Yes — it’s designed to replace the factory lift pump and provide stable supply pressure/volume for stock to moderately modified 6.5L engines.
Do I need to run a return line?
No. The Raptor-4G is internally regulated and does not require a return line.
What pressure does the RP-4G-150 run?
It is adjustable and internally regulated for the 6.5L application; follow the install manual for target pressure and verification with a gauge.
How loud is the 4G motor?
The 4-bearing 4G design is known for quiet operation and long service life when mounted and isolated correctly on the frame.
Do I need the full Air/Fuel Separation kit instead?
If you want filtration and air/vapor separation before the IP, choose one of the AirDog FP/DF systems listed in the Cross-Reference section above.
Specifications for airdog R4SBC135
| Brand | AirDog (PureFlow) |
| Part Number | R4SBC135 (RP-4G-150) |
| UPC | 813094011353 |
| GTIN | 813094011353 |
| Flow Rate | 150 GPH |
| Vehicle | 1992–2000 Chevy/GMC 6.5L Diesel (Detroit Diesel) |
| Shipping Weight | 17 lb |
| Package Dimensions (L×W×H) | 12 × 12 × 7 in |
| Shipping Method | Ground (standard) |
| CARB Status | Not CARB-legal for sale/use in CA (check local laws) |
| Prop 65 | Not listed by manufacturer. Info: P65Warnings.ca.gov |
