The Pump!

Are you looking to install a new Cummins lift pump but you’re on a budget? Then you might want to consider a Raptor 4G for your 1994-1998 5.9L 12V Cummins. The AirDog Raptor RP-4G 150GPH R4SPBF359 is the non-filtered line of lift pumps that AirDog offers but still packs a big punch! The Raptor RP-4G 150gph is a lift pump that provides you diesel with a steady flow of fuel and greater performance for your modified truck. Whether you have a Cummins with an upgraded injection pump, oversized injectors, or both, you can really benefit from the 150gph lift pump.  It will eliminate fuel starvation at higher RPMs providing the fuel pressure your Cummins needs.

The System

Your Cummins fuel system is the heart of the vehicle’s performance and reliability. This high pressure Cummins lift pump mounts to the inner frame rail using the supplied sandwich plate mounting system, the suction line connects to the factory suction fitting on top of the fuel module, and the pressure side connects to the factory injection pump feed line on the frame back by the fuel cooler making install quick and easy. The AirDog Raptor RP-4G 150GPH is internally regulated and does not require a return line.

The Fix

This high pressure Cummins lift pump could help with a P0087 & P1093 low fuel rail pressure codes by supplying your injection pump with fuel, rather than your injection pump doing most of the work pulling the fuel up from the tank. This positive supply being fed to your injection pump will also add performance, throttle response, and longevity to your vehicle. Due to extra stress on your fuel system from either high mileage and/or additional performance modifications, like a tuner or larger injectors, your injection pump can become weak over time. Resulting in a drop of performance, reliability, and fuel economy.


This AirDog Raptor RP-4G 150GPH Cummins lift pump is recommended for trucks that have mild fuel system and tuning upgrades. Backed by a lifetime warranty.


Benefits of the Raptor Fuel Pump:

  • Adjustable Diaphragm Fuel Pressure Regulator
  • No Return Line Needed
  • Easy Installation
  • Flow Rates of 100 and 150 GPH
  • Complete Installation Kit (minus tools)

Raptor Fuel Pump: Installation for Any Skill Level

The installation of any Raptor system has been designed with the customer in mind. We know not everyone has special tools or fabrication skills, so the installation was made as easy as possible with basic hand tools and the, occasional, power drill.  The quick-connect fittings and fuel lines make this a true plug and go installation, reducing the overall installation time. The step-by-step manual outlines each process of the installation and is accompanied by visual guides to aid your progress.

Additional information

Weight 10 lbs
Dimensions 9 × 6 × 7 in


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