Engineered specifically for stock to moderately modified 2001 through 2010 Chevrolet Silverado and GMC Sierra 2500HD/3500 trucks powered by the 6.6L Duramax V8 turbo diesel engine (LB7, LLY, LBZ, and LMM platforms), the AirDog Raptor 4G 100 GPH Fuel Lift Pump (Part # R4SBC133) provides a reliable, high-performance replacement supply solution.

Because factory Duramax fuel systems rely on the high-pressure injection pump to pull fuel under vacuum, air and vapor bubbles are frequently introduced, causing premature wear. The Raptor 4G utilizes an advanced four-bearing motor with an intermediate shaft that isolates fuel from the electric motor, delivering a consistent, quiet 100 GPH positive pressure supply with zero core charge.

Key Features & Benefits

• 4G Intermediate Shaft Design: Isolates fuel from the motor housing and enables self-alignment of the gerotor to lower amp loads and extend pump life.
• 100 GPH Flow Rate: Perfectly calibrated volumetric delivery to support stock to moderately modified Duramax applications.
• Internally Regulated Operation: Eliminates the need for external return lines, simplifying frame-rail installation.
• Whisper-Quiet Performance: Engineered to operate at significantly lower noise levels than traditional aftermarket lift pumps.
• Zero Core Charge: Brand-new outright replacement lift pump requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: PureFlow AirDog
• Manufacturer Part Number / SKU: R4SBC133 (RP-4G-100)
• Product Type: In-Line Electric Fuel Lift Pump
• Flow Rate Capacity: 100 GPH (Gallons Per Hour)
• Recommended Application: Stock to moderately tuned performance builds
• Truck Compatibility: 2001–2010 GM 2500HD / 3500 Silverado & Sierra
• Engine Platform: 6.6L Duramax V8 Turbo Diesel (LB7, LLY, LBZ, and LMM)
• Core Requirement: None
• Warranty: AirDog Limited Lifetime / Manufacturer Warranty

Vehicle Fitment & Technical Installation Notes

• 2001–2004 GM 2500HD / 3500 Duramax 6.6L (LB7)
• 2004.5–2005 GM 2500HD / 3500 Duramax 6.6L (LLY)
• 2006–2007 GM 2500HD / 3500 Duramax 6.6L (LBZ Classic)
• 2007.5–2010 GM 2500HD / 3500 Duramax 6.6L (LMM)
• Installation Tip: Mount the Raptor 4G pump securely to the frame rail using the included sandwich plate bracketry. Connect the suction line to the factory fuel module port and plumb the pressure side directly into the factory feed line near the frame fuel cooler.