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Cylinder head valve cover (rocker cover) for Isuzu 6HK1 engine as used in the Hitachi ZX330 excavator.
Cylinder head cover (valve cover) for Isuzu 4BG1 engine, used in Hitachi ZX120 excavators. Encloses the valve train and prevents oil leaks from the top of the cylinder head.
Cylinder head cover for the Isuzu 6WG1T engine used in Hitachi ZX450-3 excavators.