QSB 5.9 Aftercooler – PART #5566839

Genuine Cummins complete aftercooler assembly. Direct replacement for all QSB5.9 engines. Updated Cummins MOTA manufactured aftercooler. If replacing from the original style aftercooler to the new updated Cummins MOTA manufactured style aftercooler on QSB5.9 engines you must use a new (1) 5665255 Bracket and (1) 3900631 bolt. (hvae a check box to add bracket and bolt). (QTY 1) 3969988 Gasket(s) are required for QSB aftercooler installation. (LINK OR CHECKBOX)