OEM-specification Komatsu Cooling Component. Part number ym129900-44700. Compatible with Komatsu 4D98E 1C 4D98E 1A Tr 4D94Le 2Z Bb 4D94Le 2Z Ae 4D94Le 2Z Ad 4D94Le 2Z Ac 4D94Le 2Z Ab 4D94E 1A.
Always verify with serial number before ordering.
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Flush cooling system with distilled water before refilling. Use pre-mixed coolant — never plain water, which causes corrosion. Pressure-test system after any cooling repair. Check thermostat by immersing in hot water — should open at rated temperature.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.