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the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms
Want the benefits of the in-tank pump but need to run your own fuel lines or aftermarket filters
improve turbo spool
A FASS Fuel Systems can be a beneficial upgrade for your GM Duramax LML diesel engine
Convert your LML's fuel system from a CP4 to a CP3
FASS Fuel Systems Titanium Signature Series Diesel Fuel System 165GPH GM Duramax 6.6L 2011-2014 (TSC11165G) engineoil the CP4 has proven toFASS Fuel Systems Diesel System 2011 2014 GM Duramax LML 6. 6L Titanium Signature Series 165GPH (TSC11165G) Part No: TSC11165G A FASS Fuel Systems can be a beneficial upgrade for your GM Duramax LML diesel engine, this is because your Duramax doesnt 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
US$ 92.99
US$ 92.99
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