AirDog A4SPBC185 FP-100-4G Lift Pump 01-10 Chevy/GMC 6.6L Duramax

Vehicle Fitment

• 2001-2010 Chevrolet/GMC 2500/3500 Series (6.6L Duramax Diesel: LB7/LLY/LBZ/LMM)

Features

• Original AirDog FP-100-4G fuel air separation & lift pump system
• 100 GPH diesel lift pump capacity for improved fuel delivery
• 4G motor design with quiet, efficient operation
• Frame rail mounting using included sandwich plate bracket
• Removes entrained air, water, and contaminants before delivery to CP3
• Improves throttle response, fuel economy, and injector life
• Uses factory suction port and fuel line connections for direct fit
• Complete installation kit including wiring harness, hoses, and fittings

Specifications

• Part Number: A4SPBC185
• Flow Rate: 100 GPH
• Compatible Engines: 6.6L Duramax Diesel (LB7/LLY/LBZ/LMM)
• Fuel Type: Diesel
• Pressure Regulation: Ball-and-spring base (~8-10 psi nominal)
• Mounting: Frame rail sandwich plate included
• Includes Air/Fuel separator filter and return to tank via filler neck tee
• Drivetrain Compatibility: RWD/4WD

Included Components

• 1x AirDog FP-100-4G fuel pump assembly
• 1x Sandwich plate frame mounting bracket
• 1x Wiring harness with connectors
• 1x Fuel separator filter (2 micron level)
• 1x Set of fuel hoses & quick-connect fittings
• 1x Filler neck return tee
• 1x Installation hardware kit
• 1x Manufacturer installation manual

Product Description

The AirDog A4SPBC185 FP-100-4G Lift Pump is a complete fuel delivery and air/fuel separation system engineered for 2001-2010 Chevrolet and GMC 2500/3500 trucks powered by the 6.6L Duramax diesel engine (LB7, LLY, LBZ, and LMM variants). This system replaces the stock lift pump to provide consistent, clean fuel delivery to the CP3 injection pump, separating out entrained air, water, and contaminants for smoother engine operation, improved throttle response, and extended injector life.

Featuring a 100 GPH capacity and rugged 4G motor design, the AirDog FP-100-4G supports stock and mildly upgraded engines, helping maintain stable fuel pressure and flow under load. Installation is straightforward thanks to the included frame rail sandwich plate and complete hardware kit, making it ideal for Duramax owners seeking enhanced fuel system reliability and performance.

Fitment is confirmed for 2001-2010 Chevrolet and GMC Duramax diesel trucks with the 6.6L engine. This pump supports both RWD and 4WD drivetrains within the stated range. 2025 coverage is not applicable for this legacy platform.