Replacement raw water and cooling water hoses for earlier Vetus Diesel 4-cylinder M-Series engines M4.15 & M4.17. These engines do not have the black water-cooled engine cover.
Engines produced up to June 2009 have single long hose from the circulation pump to the heat exchanger (STM3091); engines produced after June 2009 have a cast manifold bracket / pipe which the alternator mounts on and this has two hoses, one from the circulation pump to the manifold (STM9852) and one from the manifold to the heat exchanger (STM9853).
Hoses available are:
STM7561 - raw water hose: sea water pump to heat exchanger
STM7585 - heat exchanger injection bend hose
STM3091 - coolant hose: circulation pump to heat exchanger (engines manufactured up to 06/2009)
STM9852 - coolant hose: circulation pump to cast manifold pipe (engines manufactured after 06/2009)
STM9853 - coolant hose: cast manifold pipe to heat exchanger (engines manufactured after 06/2009)
STM7560 - thermostat hose
STM7858 - thermostat drain hose
STM1027 - heat exchanger filler neck / cap drain hose
