Engineered specifically for stock to moderately modified 2001 through 2016 Chevrolet Silverado and GMC Sierra 2500HD/3500 trucks powered by the 6.6L Duramax V8 turbo diesel engine (LB7, LLY, LBZ, LMM, and LML platforms), the FASS Signature Series Adjustable 100 GPH Fuel Lift Pump (Part # FASC09100G) provides clean, pressurized, air-free fuel supply to protect expensive high-pressure CP3 and CP4 injection pumps.

Unlike factory suction-based systems that starve under heavy throttle, the FASS adjustable lift pump allows precise on-the-fly fuel pressure tuning. Equipped with a boost compensation port that references turbo boost pressure, it dynamically adjusts fuel delivery to match engine load requirements perfectly while offering zero core charge.

Key Features & Benefits

• Adjustable Fuel Pressure Control: Features an external regulator allowing users to fine-tune fuel pressure precisely on the fly.
• Boost Compensation Port: References turbo boost pressure to scale fuel supply automatically under heavy engine load and acceleration.
• 100 GPH Flow Rate: Perfectly sized for stock to moderately modified trucks up to 600 horsepower, preventing pump starvation.
• Advanced Air & Vapor Removal: Filters and extracts entrained air and vapor bubbles before fuel reaches the injection pump, extending component life.
• Zero Core Charge: Brand-new outright high-performance lift pump system requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: FASS Fuel Systems (Fuel Air Separation Systems)
• Manufacturer Part Number / SKU: FASC09100G
• Product Type: Adjustable Diesel Fuel Lift Pump & Filtration System
• Flow Rate Capacity: 100 GPH (Gallons Per Hour)
• Horsepower Rating: Recommended for stock up to 600 RWHP applications
• Truck Compatibility: 2001–2016 GM 2500HD / 3500 Silverado & Sierra
• Engine Platform: 6.6L Duramax V8 Turbo Diesel (LB7, LLY, LBZ, LMM, LML)
• Core Requirement: None
• Warranty: FASS Limited Lifetime / Extended Warranty Program

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)
• 2011–2016 GM 2500HD / 3500 Duramax 6.6L (LML)
• Installation Tip: Mount the pump assembly securely to the frame rail using the included bracketry, plumb the fuel lines cleanly to eliminate sharp bends, and connect the boost reference line to your turbo plumbing for optimal pressure tracking.