319336 OMC CYLINDER HEAD

Genuine OMC Johnson/Evinrude cylinder head for 4 HP two-stroke outboards, circa 1973–1974 (example: 4606M model). This aluminum casting seals the combustion chamber and houses spark plug and fuel delivery passages. Includes exhaust port routing. Original equipment part essential for engine rebuild or repair. Proper torque and gasket seating critical for compression and water-tightness on these vintage 4-cylinder configurations.