How do I confirm pilotpart266160 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

Piston 3 Units 1 Set YM129002-22090 For Komatsu Wheel Loader WA40-3 WA50-3 Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84E STD

For Komatsu Piston

Piston YM129002-22090 for Komatsu

Q: What part numbers are associated with this Piston?

YM129002-22090, 3TNE84, 3TNE84T, 3D84EKomatsu, WA40-3, WA50-3, WA30-5-NA, WA30-5-W, WA30-5-X, WA40-3RS-X, WA40-3SF-X, WA40-3-X

OEM / REF: YM129002-22090SKU: pilotpart266160

Piston 3 Units 1 Set YM129002-22090 For Komatsu Wheel Loader WA40-3 WA50-3 Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84E STD is a Piston replacement part indexed for Part Number and Komatsu Wheel Loader WA40-3 WA50-3 Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84E STD Piston 3 Units 1 Set YM129002-22090, with...

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$284.54USD/EA

~~$52,599.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 21 – Oct 28
10	Oct 19 – Oct 26
50	Oct 17 – Oct 24

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.

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

Piston Description

This Piston is indexed for Part Number; Komatsu Wheel Loader WA40-3 WA50-3 Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84E STD Piston 3 Units 1 Set YM129002-22090; Engine: Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84EKomatsu Wheel Loader WA40-3,WA50-3,WA30-5-NA,WA30-5-W,WA30-5-X,WA40-3RS-X,WA40-3SF-X,WA40-3-X,WA50-3-X Details: KOMATSU ENGINE Model: 3D84E-1FB 3D84E-3F 3D84E-5X-AB S3D84E-3A3D84E-2FB 3D84E-3K 3D84N-2AA 3D84E3D84E-3A 3D84E-3LN S3D84E-3C 3D84N3D84E-3B 3D84E-FX-AB S3D84E-3B S3D84E YANMAR ENGINE Model: 3TNE84 3TNE84T. Compare reference number YM129002-22090 against the label on your existing Komatsu component before ordering.

Additional cross references on file: 3TNE84, 3TNE84T, 3D84EKomatsu. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

YM129002-22090 3TNE84 3TNE84T 3D84EKomatsu WA40-3 WA50-3 WA30-5-NA WA30-5-W WA30-5-X WA40-3RS-X WA40-3SF-X WA40-3-X

Applications

Part Number
Komatsu Wheel Loader WA40-3 WA50-3 Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84E STD Piston 3 Units 1 Set YM129002-22090
Engine: Yanmar Engine 3TNE84 3TNE84T Komatsu Engine 3D84EKomatsu Wheel Loader WA40-3,WA50-3,WA30-5-NA,WA30-5-W,WA30-5-X,WA40-3RS-X,WA40-3SF-X,WA40-3-X,WA50-3-X Details: KOMATSU ENGINE Model: 3D84E-1FB 3D84E-3F 3D84E-5X-AB S3D84E-3A3D84E-2FB 3D84E-3K 3D84N-2AA 3D84E3D84E-3A 3D84E-3LN S3D84E-3C 3D84N3D84E-3B 3D84E-FX-AB S3D84E-3B S3D84E YANMAR ENGINE Model: 3TNE84 3TNE84T

Specifications

Part Number	YM129002-22090,YM12900222090,12900222090

Fitment Notes

Brand or application signal: Komatsu Engine Spare Parts
Product family: Piston
System category: Engine Spare Parts > Cylinder Components > Piston
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.