Jet-ski Racing Kawasaki Exchanger - Oil Cooler for UltraIDIARTEC water/oil exchanger for KAWASAKI ULTRA 300 and 310 jet skiREF: OCK-100The oil exchanger or cooler to improve the cooling of KAWASAKI ULTRA 300 and 310 engines.It is fitted to replace the original exchanger, possibility of fitting a temperature sensor to visualize the engine heating on..