OEM / REF: 21S-03-31111SKU: pilotpart439899
New Water Tank Radiator Core ASS'Y 21S-03-31111 for Komatsu Excavator PC09-1 PC09-1-A PC09-1-B is a Radiator replacement part for Komatsu HVAC Parts, categorized under HVAC Parts > Radiator. Use OEM part number 21S-03-31111 and confirm machine model, engine model, and serial details before checkout.
This Radiator is indexed for Komatsu Komatsu Excavator PC09-1 PC09-1-A PC09-1-B. Compare reference number 21S-03-31111 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 21S-03-31111, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.
Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.
Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.
Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.
