Add a little attitude to your Cummins billet valve cover! These fill caps are designed to work with our billet Cummins valve covers, HOWEVER, THEY WILL ALSO WORK ON A FACTORY 03+ COVER !! We have taken actual 44 Mag casings and pressed them into a billet CNC machined fill cap!
If you are trying to build your own turbo setup this may be just the part your looking for. Steel weld-on HX40 flange with a machined recess for 4″ pipe.
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