Cummins 3393663 Transmission Oil Cooler replacement by Seakamp Engineering. Exact replacement oil cooler for Cummins Part # 3393663 and Sen-Dure Part # 12717-1-7 used on Cummins 6BTA marine diesel engines, horsepower models 300, 315, 330, and 370. Made of copper and bronze with internal tubes and tube sheets made with 90/10 Cupro Nickel. Comes with zinc anode and ground lug. Works with original ZF, Hurth, Twin Disc, Velvet Drive, or Borg Warner transmission.
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