How do I confirm pilotpart970971 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Water Tank Radiator Core ASS'Y 21W-03-31112 for Komatsu Excavator PC75UU-3 PC78UU-5

For Komatsu Radiator

Radiator 21W-03-31112 for Komatsu

OEM / REF: 21W-03-31112SKU: pilotpart970971

Water Tank Radiator Core ASS'Y 21W-03-31112 for Komatsu Excavator PC75UU-3 PC78UU-5 is a Radiator replacement part for Komatsu HVAC Parts, categorized under HVAC Parts > Radiator. Use OEM part number 21W-03-31112 and confirm machine model, engine model, and serial details before checkout.

Stock: In stock
Condition: New
Fitment: Komatsu HVAC Parts
Category: Radiator

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$1,055.00USD/EA

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Sep 23 – Sep 30
10	Sep 21 – Sep 28
50	Sep 19 – Sep 26

Estimates from today; confirm exact lead time before payment.

Quantity

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

Confirm fitment before ordering →

Lead times can vary by freight route and customs. Contact support for expedited shipping.

Radiator Description

This Radiator is indexed for Komatsu Komatsu Excavator PC75UU-3 PC78UU-5. Compare reference number 21W-03-31112 against the label on your existing Komatsu component before ordering.

Additional cross references on file: B07Y9L2T8S. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

21W-03-31112 B07Y9L2T8S

Applications

Komatsu Komatsu Excavator PC75UU-3 PC78UU-5

Fitment Notes

Brand or application signal: Komatsu HVAC Parts
Product family: Radiator
System category: HVAC Parts > Cooling System Components > Radiator
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.