How do I confirm pilotpart420251 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

Engine Water Pump 129100-42002 YM129100-42002 12910042002 for Komatsu Engine 3D88E 3D84E

For Komatsu Water Pump

Water Pump 129100-42002 for Komatsu 3D84E Engine

Q: What part numbers are associated with this Water Pump?

129100-42002, YM129100-42002, YM129100-42001, YM129100-42004, YM129100-42000, YM729428-42004

OEM / REF: 129100-42002SKU: pilotpart420251

Engine Water Pump 129100-42002 YM129100-42002 12910042002 for Komatsu Engine 3D88E 3D84E is a Water Pump replacement part indexed for Komatsu · 3D84E and Komatsu · 3D88E. Match OEM part number 129100-42002 and confirm fitment for Komatsu Engine Spare Parts before ordering.

Stock: In stock
Condition: New
Fitment: Komatsu Engine Spare Parts
Category: Water Pump

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$89.99USD/EA

~~$10,199.00~~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.

Water Pump Description

This Water Pump is indexed for Komatsu · 3D84E; Komatsu · 3D88E. Compare reference number 129100-42002 against the label on your existing Komatsu component before ordering.

Additional cross references on file: YM129100-42002, YM129100-42001, YM129100-42004. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

129100-42002 YM129100-42002 YM129100-42001 YM129100-42004 YM129100-42000 YM729428-42004

Applications

Komatsu · 3D84E
Komatsu · 3D88E

Specifications

Gasket	Included
Part Number	129100-42002, YM129100-42002, 12910042002, YM129100-42001, YM129100-42004, YM129100-42000, YM729428-42004, YM12910042002, YM12910042001, YM12910042004, YM12910042000, YM72942842004

Fitment Notes

Brand or application signal: Komatsu Engine Spare Parts
Product family: Water Pump
System category: Engine Spare Parts > Lubrication & Cooling Systems > Water Pump
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.