OEM-specification Komatsu Fan Pulley. Part number 1304-821-h1. Compatible with Komatsu Wa320 3 Wa320 3L Wa320 3Mc Wa380 3 Wa380 3L Wa380 3Mc Wa420 3 Wa420 3L Wa420 3Mc.
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.
