Suits Cummins 315/330 & 370 Diamond Series & QSL9 with 1.75" water fittings.
3" x 6" Oil cooler (Sen-dure #12717-1-7)
Core length = 6", overall length = 10" (tail to tail)
This cooler has 1.75" water fittings. For the 1.5" version, see Cummins 3393663CN 1.5.
Anode - Z9-032
This is a non-OEM, aftermarket part by Mr Cool (USA) MRC 3393663 CN 1.75