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Outer valve spring for Isuzu 6WG1 engine in Hitachi ZX450-3 excavators. Also fits Isuzu CVZ, CXZ, EXZ with 6WF1 engine. Returns intake and exhaust valves to closed position.
Outer (large) valve spring for Isuzu 6BG1T diesel engine. Fits Hitachi EX200-3 excavators.
Outer (large) valve spring for Isuzu 4BG1 diesel engine. Fits Hitachi ZX120 excavators.
Inner (small) valve spring for Isuzu 6SD1T diesel engine. Fits Hitachi EX300 excavators.