Overhaul Gasket Description
This Overhaul Gasket is indexed for Case Suitable For Cummins 4BT 4.5 QSB Engine Case 590SM. Compare reference number 590SM against the label on your existing CASE component before ordering.
Before checkout, compare OEM part number 590SM, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.




