How do I confirm pilotpart266181-01 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 Kit With Ring Set YM129902-22080 YM129903-22050 for Komatsu Wheel Loader WA75-3 WA85-3 Yanmar Engine 4TNE98 Komatsu Engine 4D98E

For 4tne98-ac Piston Ring

Piston Ring YM129902-22080 for 4tne98-ac 4TNE98-ADS Engine

Q: What part numbers are associated with this Piston Ring?

YM129902-22080, YM129903-22050, 12990222080, 12990322050

OEM / REF: YM129902-22080SKU: pilotpart266181-01

Piston Kit With Ring Set YM129902-22080 YM129903-22050 for Komatsu Wheel Loader WA75-3 WA85-3 Yanmar Engine 4TNE98 Komatsu Engine 4D98E is a Piston Ring replacement part indexed for 4TNE98-AC 4TNE98-AD · 4TNE98-ADS and 4TNE98-AG 4TNE98-FB · 4TNE98-SA, with 3 application records on file. Match OEM part number YM12990...

Stock: In stock
Condition: New
Fitment: 4tne98-ac Engine Spare Parts
Category: Piston Ring

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$408.16USD/EA

~~$52,599.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Aug 9 – Aug 16
10	Aug 7 – Aug 14
50	Aug 5 – Aug 12

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.

Piston Ring Description

This Piston Ring is indexed for 4TNE98-AC 4TNE98-AD · 4TNE98-ADS; 4TNE98-AG 4TNE98-FB · 4TNE98-SA; 4TNE98-G1A 4TNE98-KM · 4TNE98-NSR; 4TNE98-TB 4TNE98-TBL · 4TNE98-TBW. Compare reference number YM129902-22080 against the label on your existing 4tne98-ac component before ordering.

Additional cross references on file: YM129903-22050, 12990222080, 12990322050. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

YM129902-22080 YM129903-22050 12990222080 12990322050

Applications

4TNE98-AC 4TNE98-AD · 4TNE98-ADS
4TNE98-AG 4TNE98-FB · 4TNE98-SA
4TNE98-G1A 4TNE98-KM · 4TNE98-NSR
4TNE98-TB 4TNE98-TBL · 4TNE98-TBW
4TNE98-TBA
4D98E-1A-TR 4D98E-1FB · 4D98E

Specifications

Part Number	YM129902-22080,YM129903-22050,12990222080,12990322050

Fitment Notes

Brand or application signal: 4tne98-ac Engine Spare Parts
Product family: Piston Ring
System category: Engine Spare Parts > Cylinder Components > Piston Ring
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.