CYLINDER HEAD GASKET 11141-93J03

Function and Technical Context

The cylinder head gasket is the sealing element that seals the joint between the engine block and the cylinder head, ensuring the proper separation of the cooling, lubrication, and combustion chamber circuits in high-powered outboard motors. It operates within the combustion system and also integrates the seawater cooling passages, acting as a barrier against the high pressures and temperatures generated during each combustion cycle. If this gasket loses its sealing capacity, water can enter the cylinders, oil can contaminate the coolant, or combustion gases can escape into adjacent circuits, causing serious and irreversible damage to the entire engine. This part number covers Suzuki DF200, DF225, and DF250 engines manufactured from 2004 onward, as well as 200- and 225-hp Johnson and Evinrude outboard motors with part number 11141-93J10, and is compatible with OMC manufacturer part numbers 5035971 and 5036629 and Suzuki part number 11141-93J03.

When should this part be replaced?

The most common symptoms of a damaged cylinder head gasket include white smoke from the exhaust (indicating water in the combustion chamber), loss of compression in one or more cylinders, a whitish emulsion in the engine oil, or recurring overheating with no apparent cause in the cooling system. It is recommended to inspect the head gasket whenever a thorough engine overhaul is performed, following episodes of severe overheating, or when the maintenance intervals specified by the manufacturer for this type of high-displacement engine are exceeded. Replacing the head gasket as a preventive measure at the first sign of failure prevents catastrophic breakdowns at sea and significantly reduces the total cost of repair.

Compatible Johnson/Evinrude Engines

Equivalent Manufacturer Part Numbers