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- FASS Dura-Max Flow Enhancer - GM Duramax LB7
US Diesel Parts - FASS Dura-Max Flow Enhancer - GM Duramax LB7
FASS Dura-Max Flow Enhancer Fuel Pumps for 2001 - 2004 Chevy GMC 6.6L Duramax LB7.
The Dura-Max Flow Enhancer is modeled around our very successful DDRP series and is now available for the GM Duramax. GM Duramax trucks do not have a stock lift pump which forces the injection pump to "pull" the fuel all the way from the tank, creating a vacuum and constantly introduces more air and vapor into your fuel. The Dura-Max Flow Enhancer creates a postive flow of fuel, "pushing" it to your injection pump, eliminating vacuum and drastically reducing air and vapor in your fuel.