B & C series, QSB, QSC, QSL OEM Cummins Exhaust Elbow Washer – PART # 3278499

Genuine Cummins OEM Exhaust Elbow mounting Washer. Used with Bolt #3900631 when Fastening Exhaust/Mixing Elbow to turbocharger. Extra thick, Hight Strength, High Temp M8 Washer. Fits all B & C series, QSB,QSC and QSL engines. Qty 4 Required