OEM-specification Komatsu Relief Valve. Part number 2070371290. Compatible with Komatsu Excavator Pc300 7 Pc340Lc 7K Pc350 7 Pc360 7 Pc380Lc 7. Fits: PC300LC7, PC340NLC7K, PC340LC7K, PC300LL7L.
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.