HEI offers a variety of engines to marine users. Primarily we offer used and rebuilt EMD, GE, ALCO, Detroit Diesel, Cummins, and other marine engines. Ranging from Detroit 53 series to 16V4000, GE 7FDM, as well as EMD 567, 645, and 710 engines. We also offer CAT, John Deere, and other marine application engines. We can offer an engine that meets users specific needs. Looking for an engine to replace in your offshore fishing vessel? Or maybe need an engine core to rebuild for your towboat? We have a large inventory of engines available to help users get their vessels running again.