In StockEngine Water Pump YM123900-42100 YM123900-42101 for Komatsu WA115-3 WA90-3 WB140-2 WB150-2 WB91R-2 WB93R-2 WB97R-2 WB97S-2
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Water Pump YM123900-42100 for Komatsu WA115-3 (35 km/h) Engine

OEM / REF: YM123900-42100SKU: pilotpart426782

Engine Water Pump YM123900-42100 YM123900-42101 for Komatsu WA115-3 WA90-3 WB140-2 WB150-2 WB91R-2 WB93R-2 WB97R-2 WB97S-2 is a Water Pump replacement part indexed for Komatsu · WA115-3 (35 km/h) and Komatsu · WA115H30051, with 3 application records on file. Match OEM part number YM123900-42100 and confirm fitment f...

Stock
In stock
Condition
New
Fitment
Komatsu Engine Spare Parts
Category
Water Pump
  • Fitment support before you order
  • Worldwide delivery options

Water Pump Description

This Water Pump is indexed for Komatsu · WA115-3 (35 km/h); Komatsu · WA115H30051; Komatsu · WA115H30180/ H30181 - Up; Komatsu · WA115-3 S/N. Compare reference number YM123900-42100 against the label on your existing Komatsu component before ordering.

Additional cross references on file: YM123900-42101, 123900-42100, 123900-42101. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Komatsu · WA115-3 (35 km/h)
  • Komatsu · WA115H30051
  • Komatsu · WA115H30180/ H30181 - Up
  • Komatsu · WA115-3 S/N
  • Komatsu · WA115H30180 / H30181 - Up
  • Komatsu · WA90-3 (S/N HA970051-HA970238)
  • Komatsu · WA95-3 (S/N HA980051-HA980375)
  • Komatsu · WA90-3 (S/N HA970239-HA970315 / H20316-H20318)
  • Komatsu · WA95-3 (S/N HA980376-HA980668 / H20669-H20671)
  • Komatsu · WB140-2 S/N 140F10001-Up
  • Komatsu · WB140-2 S/N 140F11451-Up
  • Komatsu · WB140PS-2 S/N 140F50001-Up
  • Komatsu · WB140PS-2 S/N 140F50092-Up
  • Komatsu · WB150-2 S/N 150F10001-Up
  • Komatsu · WB150-2 S/N 150F10293-Up
  • Komatsu · WB150PS-2 S/N 150F50001-Up
  • Komatsu · WB150PS-2 S/N 150F50020-Up
  • Komatsu · WB91R-2 S/N 91F20001-Up
  • Komatsu · WB91R-2 S/N 91F20070-Up
  • Komatsu · WB91R-2 S/N 91F20127-Up
  • Komatsu · WB93R-2 S/N 93F20001-Up
  • Komatsu · WB93R-2 S/N 93F21638-Up
  • Komatsu · WB93R-2 S/N 93F23075-Up
  • Komatsu · WB97R-2 S/N 97F20001-Up
  • Komatsu · WB97R-2 S/N 97F20172-Up
  • Komatsu · WB97R-2 S/N 97F20743-Up
  • Komatsu · WB97S-2 S/N 97SF10001-Up
  • Komatsu · WB97S-2 S/N 97SF10281-Up
  • Yanmar Yanmar 4D106 Engine

Specifications

GasketIncluded
Part NumberYM123900-42100, YM123900-42101, YM12390042100, 123900-42100, 12390042100, 123900-42101

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.

Confirm fitment & quote details

Send machine details and nameplate photos before ordering high-risk or quote-only parts.