Engineered specifically for stock-power 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 FASS Dura-Max Flow Enhancer (Part # DMAX7001) provides a reliable, budget-friendly lift pump alternative.

Because factory Duramax trucks lack a stock lift pump, high-pressure injection pumps must pull fuel under vacuum, which introduces air and vapor bubbles that can accelerate wear. The DMAX7001 pushes a steady 120 GPH of fuel at approximately 10 PSI to your injection pump, completely eliminating vacuum and safeguarding your fuel system with zero core charge.

Key Features & Benefits

• Eliminates Fuel Vacuum: Pushes positive fuel pressure to the injection pump to prevent air and vapor introduction.
• 120 GPH Flow Rate at 10 PSI: Provides ideal volumetric supply and pressure for stock power levels and daily driving.
• Cost-Effective Alternative: Offers a reliable, lower-cost entry point compared to full multi-filter air/vapor separation systems.
• Extends Injection Pump Life: Reduces the workload on your factory CP3 pump, preventing premature component failure.
• Zero Core Charge: Brand-new outright replacement lift pump requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: FASS Fuel Systems (Fuel Air Separation Systems)
• Manufacturer Part Number / SKU: DMAX7001
• Product Type: In-Line Electric Fuel Lift Pump ("Flow Enhancer")
• Flow Rate Capacity: 120 GPH (Gallons Per Hour) at ~10 PSI
• Recommended Application: Stock power levels and factory replacement
• 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: FASS Limited 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 Flow Enhancer pump along the frame rail between the fuel tank and factory filter housing, wire into switched 12V power per instructions, and verify positive pressure output prior to engine startup.