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2019-2020 6
The number one reason the factory lift pumps fail is because all pumps function better when pushing under pressure
removing dirt
adding additional stress to your CP3 Pump and risk introduce additional air into your fuel
FASS 2001-2010 Duramax 6.6L Titanium Signature Series - 250GPH Fuel Tank Sump Fuel Tank Fuel Air & Fuel 2019-2020 6FASS Diesel Fuel System 2001 2010 GM Duramax 6. 6L Titanium Signature Series 250Gph (TS C10 250G) 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
