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)
Cross-Reference / Related FASS Upgrades (CPP Diesel)
- FASS TSPC10100G Titanium Signature Series Plus (Stock–600HP)
- FASS TSPC10250G Titanium Signature Series Plus (900–1200HP)
- FASS TSPC10290G Titanium Signature Series Plus (1200–1500HP)
- FASS NDTSPC10100G No-Drop Series Plus (Stock–600HP)
FAQs
Will the DMAX7001 replace my factory fuel filter?No. The Flow Enhancer pressurizes and improves delivery but does not replace factory filtration. For full filtration and air/vapor separation, consider a Titanium Signature Series Plus system.
How much pressure does it supply?
It’s preset for approximately 8–10 PSI at up to 120 GPH—ideal for stock CP3 operation on 2001–2010 Duramax platforms.
Do I need custom tuning after installation?
No tuning is required. The DMAX7001 is designed to support stock and lightly modified trucks by stabilizing inlet pressure to the CP3.
What’s the difference between the Flow Enhancer and Titanium Signature Series?
The Flow Enhancer adds pressure and flow only. Titanium Signature Series systems add high-efficiency filtration and air/vapor separation and are recommended for higher-power builds or harsh duty cycles.
Specifications for Fass DMAX7001
| Spec | Value |
|---|---|
| Brand | FASS Fuel Systems |
| Part Number | DMAX7001 |
| Flow / Pressure | Up to 120 GPH @ ~8–10 PSI |
| UPC (GTIN-12) | 850044106738 |
| GTIN | 0850044106738 |
| Country of Origin | USA |
| Shipping Weight | ~9.9 lb |
| Package Dimensions | Approx. 12" x 8.5" x 7" |
| Shipping Method | Ground |
| Prop 65 | Cancer & Reproductive Harm — www.P65Warnings.ca.gov |
