AirDog A4SPBC190 100GPH Fuel System for 15-16 Chevy/GMC 6.6L Duramax LML

Vehicle Fitment

• 2015-2016 Chevrolet Silverado 2500HD/3500HD (LML, 6.6L Duramax Diesel, RWD/4WD)
• 2015-2016 GMC Sierra 2500HD/3500HD (LML, 6.6L Duramax Diesel, RWD/4WD)

Features

• 100 GPH high-flow lift pump for stock to moderately modified engines
• Removes air, water, and particulates from diesel fuel
• 4G motor design for proven durability and reliability
• Integrated fuel/air separation system improves injector longevity
• Direct supply to CP4 injection pump for consistent fuel pressure
• Mounts on frame rail ahead of fuel tank for clean installation
• Uses factory suction port and return system for OE integration
• Includes complete wiring harness, filters, and installation hardware
• Improves throttle response and overall engine efficiency
• Helps prevent low-pressure fuel codes and fuel starvation issues

Specifications

• Brand: AirDog (PureFlow)
• Part Number: A4SPBC190
• Fuel Flow: 100 GPH
• Fuel Type: Diesel
• Motor: 4G electric lift pump
• Mounting: Frame-mounted (in front of fuel tank)
• Filtration: 2-micron fuel filtration with water separation
• System Type: Air/Fuel Separation Lift Pump
• Return System: Filler neck tee return to tank
• Compatibility: CP4 injection pump equipped Duramax LML engines
• Drivetrain: RWD and 4WD compatible

Included Components

• 1x AirDog FP-100-4G lift pump assembly
• 1x Mounting bracket and hardware kit
• 1x Complete wiring harness
• 1x Fuel filter and water separator assembly
• 1x Fuel hoses and fittings kit
• 1x Installation manual

Product Description

The AirDog A4SPBC190 FP-100-4G is a high-performance diesel fuel lift pump system designed specifically for 2015-2016 Chevy and GMC trucks equipped with the 6.6L Duramax LML engine. This system is engineered to deliver clean, air-free fuel directly to the CP4 injection pump, improving fuel consistency and reducing strain on critical engine components.

By removing air, water, and contaminants from the fuel, this system helps prevent injector wear, cavitation, and low fuel pressure issues. The 100 GPH flow rate supports stock to moderately modified trucks, making it ideal for daily drivers, towing applications, and performance builds up to approximately 500 horsepower. It mounts cleanly to the frame rail and integrates with factory fuel lines for an efficient, near-OE installation.

Installation is designed to be straightforward with all necessary components included, such as hoses, wiring, and filters. The system utilizes a return-style design that sends excess fuel and separated air back to the tank, maintaining optimal fuel system pressure and reliability. Fitment is confirmed through 2025 for the 2015-2016 Duramax LML platform; no later model coverage is included.