How do I confirm pilotpart105244 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 Engine 4D95 Excavator PC75UU-3 PC78UU-5

For Komatsu Radiator

Radiator 21W-03-31122 for Komatsu PC75UU-3

OEM / REF: 21W-03-31122SKU: pilotpart105244

Water Tank Radiator Core ASS'Y 21W-03-31112 for Komatsu Engine 4D95 Excavator PC75UU-3 PC78UU-5 is a Radiator replacement part indexed for Komatsu PC75UU-3 and Komatsu PC78UU-5, with 3 application records on file. Match OEM part number 21W-03-31122 and confirm fitment for Komatsu HVAC Parts before ordering.

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$784.99USD/EA

~~$111,599.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

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 PC75UU-3; Komatsu PC78UU-5; Komatsu. Compare reference number 21W-03-31122 against the label on your existing Komatsu component before ordering.

Additional cross references on file: 21W-03-31121. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

21W-03-31122 21W-03-31121

Applications

Komatsu PC75UU-3
Komatsu PC78UU-5
Komatsu

Specifications

Part Number	21W-03-31122, 21W-03-31121, 21W0331122, 21W0331121

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.