Since 1980, UNIPAR has built EMD power assemblies for marine users around the world. With options of both new and remanufactured, we can build to any need and budget. Need a new cylinder head with everything else rebuilt? No problem! Want all rebuilt with new valves? You got it, no problem! Our 40,000 square foot production facility allows us to maintain maximum quality with multiple testing stations, and a production line that is second to none for aftermarket builders.