Cummins 3393663 Oil Cooler Replacement 1.75" Water Connections Cummins 3393663 Oil Cooler Replacement 1.75" Water Connections Replaces Cummins part number: 3393663 Used on Cummins engines: 6BTA – 315/330 & 370 Diamonds & QSL9 with 1.75 in. Water ports Oil Cooler Specifications: Material: copper nickel... MSRP: Was: Now: $802.00 Add to Cart