FASS No-Drop Series 100GPH Fuel System for GMC/Chevrolet 2011-2014 Duramax 6.6L (Stock-600HP) XL|2003 The included massive air filter Fuel Injector Lines 50-74004 No Turbo size:Billet S472/83/.90

The included massive air filter is surrounded by an open-element XLPE (cross-linked polyethylene) polymer housing that minimizes warm engine air for maximum performance

These potential issues are the reason upgraded valve springs are essential on modified engines

2015 GMC Savana 3500 LT

Most competitors use poorly designed sheet metal end tanks and provide inadequate flow volume

Instead of using aluminum like the factory

FASS No Drop Series 100GPH Fuel System for GMC Chevrolet 2011 2014 Duramax 6.6L (Stock 600HP) XL 2003 The included massive air filter Fuel Injector Lines 50 74004 No Turbo size:Billet S472 83 .90 The included massive air filter is surrounded by an open element XLPE (cross linked polyethylene) polymer housing that minimizes warm engine air for maximum performance These potential issues are the reason upgraded valve springs are essential on modified engines