This is a genuine Cummins OEM, genuine BOSCH fuel rail. This unit is a brand new take off part that will provide full functionality from a quality component which was only used to dyno an engine at Cummins. The part number for this filter bracket is: 3977530 with interchange multi-part-number: 0445226042. Please refer to the part number for fitment and review all photos provided before making your purchase. Thank you for choosing EKG!

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