Product Description

FASS DMAX7001 Diesel Fuel System Flow Enhancer – 2001–2010 GM 6.6L Duramax (LB7/LLY/LBZ/LMM)

The FASS DMAX7001 Dura-Max Flow Enhancer supplies your 6.6L Duramax with a steady 8–10 PSI of positive fuel pressure at up to 120 GPH. By pushing fuel to the CP3 under pressure (instead of the factory vacuum), it reduces aeration and vapor, lightens the CP3’s workload, and stabilizes rail pressure for cleaner combustion, improved drivability, and longer component life.

• Delivers fuel under pressure (not vacuum) to protect the CP3
• Up to 120 GPH flow; preset 8–10 PSI for OE-friendly operation
• Budget-minded upgrade ideal for stock and lightly modified trucks
• Straightforward install with vehicle-specific hardware
• Compatible with factory filtration (consider Titanium Series for full filtration/air separation)

Fitment

2001–2010 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax:

• LB7 (2001–2004)
• LLY (2004.5–2005)
• LBZ (2006–2007)
• LMM (2007.5–2010)

What’s Included

• FASS DMAX7001 Flow Enhancer pump assembly
• Mounting bracket & hardware
• Wiring harness
• Fuel hose & basic fittings
• Install instructions (see links below)

Installation Instructions

Find your manual here: FASS Installation Manuals  |  Direct PDF: D-MAX-7001 Install Guide (PDF)

Specifications for Fass DMAX7001