OEM-specification Hitachi Engine Component. Part number 4344899. Compatible with Hitachi Excavator Ex100 5 Ex120 5 Ex130H 5 Zx160 Zaxis120 Zaxis130H.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.