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Want to run AN fittings for all your radiator connections
GMC Sierra 3500 HD 2011 to 2016
Reduces Factory CP3/CP4 Workload
Stock turbo needs replacing
Preset 65 PSI Fuel Pressure
FASS Titanium Signature Series Diesel Fuel System 165GPH GM Duramax 6.6L 2001-2010 Cummins Want to run AN fittingsFASS Fuel Systems Diesel System 2001 2010 GM Duramax 6. 6L Titanium Signature Series 165GPH (TSC10165G) Part No: TSC10165G A FASS Fuel Systems can be a beneficial upgrade for your GM Duramax 6. 6L diesel engine, this is because your Duramax doesn't come with a factory System like other diesels. This requires your CP3 injection System to pull your fuel under a vacuum, adding additional stress to your CP3 System and risk introduce additional air into