FASS 2001-2010 Duramax 6.6L Titanium Signature Series - 290GPH Fuel Filter Fuel Air & Fuel The larger suction tube improve

The larger suction tube improve fuel delivery and work perfectly with higher volume fuel pumps

the XWS-3002 will now be placed on the pressure side of the pump and the PF-3001 will be placed on the suction side

air pressure from your intake manifold raises fuel pressures while under full throttle

Improved fuel volume delivery

A Titanium Signature Series fuel system also offers advanced filtration benefits that will help protect your injection system

FASS 2001-2010 Duramax 6.6L Titanium Signature Series - 290GPH Fuel Filter Fuel Air & Fuel The larger suction tube improveFASS Diesel Fuel System 2001 2010 GM Duramax 6. 6L Titanium Signature Series 290Gph (TS C10 290G). A FASS Fuel System will be a very beneficial upgrade for your GM Duramax diesel engine, this is because your Duramax doesn't come with a factory lift pump like other diesels. This requires your CP3 CP4 injection pump to pull your fuel under a vacuum, adding additional stress to your CP3 CP4 Pump and risk introduce of additional air vapor into your fuel