AirDog A4SPBC191 FP-150-4G Lift Pump 15-16 Chevy/GMC 6.6L Duramax

Vehicle Fitment

• 2015-2016 Chevrolet Silverado 2500/3500 & GMC Sierra 2500/3500 (6.6L Duramax LML)

Features

• AirDog FP-150-4G lift pump with integrated air/fuel separation
• 150 GPH (gallons per hour) fuel flow for stock-to-mild performance use
• Removes entrained air, water, and particulate contaminants from diesel fuel
• Frame-mounted installation ahead of the fuel tank for clean routing
• Includes suction draw-straw and return tee for efficient fuel circulation
• 4G gerotor motor design for quiet, reliable operation
• Improves throttle response and helps protect CP4 injection pump
• Complete kit with all necessary hardware and connections for install

Specifications

• Part Number: A4SPBC191
• Flow Rate: 150 GPH (568 LPH)
• Compatible Engines: 6.6L Duramax LML diesel
• Fuel Type: Diesel
• Mounting: Frame rail ahead of fuel tank
• Pressure Regulation: Base return regulator included
• Drivetrain Compatibility: RWD/4WD for supported models
• Recommended Use: Stock to moderately upgraded engine setups

Included Components

• 1x AirDog FP-150-4G lift pump assembly
• 1x Frame-mounting bracket
• 1x Wiring harness with relay and connectors
• 1x Suction draw-straw fuel pickup
• 1x Return filler neck tee and clamps
• 1x Fuel lines with quick-connect fittings
• 1x Water/fuel separator filter element
• 1x Installation hardware kit and instructions

Product Description

The AirDog A4SPBC191 FP-150-4G Lift Pump is a high-flow diesel fuel delivery and air/fuel separation system designed specifically for 2015-2016 Chevrolet Silverado and GMC Sierra 2500/3500 trucks with the 6.6L Duramax LML engine. This lift pump replaces the factory low-pressure fuel supply path by drawing fuel from the tank via a supplied draw-straw and delivering clean, de-aerated fuel to the CP4 injection pump. By removing air, water, and contaminants before they reach the injection system, the AirDog helps improve throttle response and maintain consistent fuel delivery under load.

With a 150 GPH flow rate and reliable 4G motor design, the FP-150-4G provides ample fuel supply for stock and moderately modified Duramax engines. The frame-mounted installation ahead of the fuel tank keeps plumbing neat and accessible. The included complete hardware kit - featuring suction pickup, wiring, fittings, and mounting components - simplifies installation, making this pump a popular upgrade for improved fuel system performance and longevity.

Fitment is confirmed for 2015-2016 Chevrolet and GMC 2500/3500 trucks equipped with the 6.6L Duramax LML diesel engine. Both RWD and 4WD models within these years are supported. 2025 fitment is not applicable for this legacy platform.