OEM Cummins Turbocharger Oil Feed Line Sealing Washer – PART #3924389

Genuine Cummins OEM Turbocharger Oil Feed Line Sealing Washer. This is a Cone shaped copper sealing washer that seals the tapered ends of the flexible oil feed line. Used on both ends of the line at the turbocharger union and oil cooler connection on B & C Series engines. Also used on just the Oil Cooler connection for QSB, QSC, and QSL Engines. #5 in diagram.