FASS DMAX7002 Duramax Flow Enhancer for 2011-2016 GM 6.6L Duramax

Vehicle Fitment

• 2011-2016 GM Duramax 6.6L (Chevrolet Silverado/GMC Sierra 2500/3500)
• Fitment confirmed through 2016. 2017+ coverage unconfirmed at time of listing.

Features

• Duramax fuel system flow enhancer designed for GM 6.6L Duramax engines
• Maintains ~8 PSI positive fuel pressure to reduce CP3/CP4 vacuum pull
• Reduces introduction of air and vapor into the fuel system
• Improves fuel delivery consistency and throttle response
• Reduces workload on factory CP3/CP4 injection pump
• Simple installation with no complex modifications required
• Budget-minded alternative to full lift pump systems
• Supports stock and lightly tuned Duramax applications

Specifications

• Brand: FASS Fuel Systems
• Part Number: DMAX7002
• Series: D-Max Flow Enhancer
• Engine Compatibility: 6.6L Duramax diesel
• Pressure Output: Approximately 8 PSI positive pressure
• Installation: Aftermarket flow enhancer between tank and injection pump
• Application: Chevrolet Silverado/GMC Sierra 2500HD & 3500HD (LML)
• Fuel Type: Diesel

Included Components

• 1x FASS DMAX7002 Flow Enhancer Fuel System
• 1x Mounting hardware kit
• 1x Installation instructions

Product Description

The FASS DMAX7002 Duramax Flow Enhancer is an aftermarket fuel delivery upgrade engineered for 2011-2016 GMC and Chevrolet Duramax 6.6L diesel trucks. Designed to maintain approximately 8 PSI of positive fuel pressure ahead of the factory injection pump, it reduces the vacuum that results from the factory CP3/CP4 setup. By doing so, the system helps minimize the introduction of air and vapor into the fuel stream - a common issue that can accelerate injector wear and decrease performance.

Ideal for stock and lightly tuned Duramax applications, the DMAX7002 improves fuel delivery consistency and throttle response while reducing strain on the factory injection system. Its straightforward installation requires no cutting or complex wiring, making it a budget-friendly alternative to full lift pump systems. While it enhances fueling reliability, users with extensive fueling upgrades may consider upgrading to FASS's Titanium Series systems for higher filtration and flow benefits.