PUMP & MTG GP-DEF 3735566 - Caterpillar

EnginesDescription of Change: New valve cover seals are used for MUI and EUI Engines. The new valve cover seals are made from a different material and will provide an improved service life. The new seals are black in color. The former seals were orange in color.Adaptable To: The new 134-5958 O-Ring Seal is a direct replacement to the former 4W-1596 O-Ring Seal used in MUI applications. The new 134-5959 O-Ring Seal is a direct replacement for the former 2W-2072 O-Ring Seal used in EUI applications. The new 134-5959 O-Ring Seal is effective with all 3500 EUI Engines. Both new seals are adaptable to first production.