How do I confirm pilotpart266986 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 YM129002-22090 YM129002-22910 for Engine Yanmar 4TNE84 Komatsu 4D84E

For Yanmar Piston

Piston YM129002-22090 for Yanmar

Q: What part numbers are associated with this Piston?

YM129002-22090, YM129002-22910, 129002-22090, 129002-22910

OEM / REF: YM129002-22090SKU: pilotpart266986

Piston Kit YM129002-22090 YM129002-22910 for Engine Yanmar 4TNE84 Komatsu 4D84E is a Piston replacement part indexed for Part Number and YANMAR ENGINE MODEL: 4TNE84-AF, 4TNE84-EAF KOMATSU ENGINE MODEL: 4D84E-3FB, 4D84E-3B, 4D84E-3C, 4D84E-3D, S4D84E-1FD, 4D84E-3E, 4D84E, S4D84E Models: DOOSAN1340XLLoader KOBELCOSK40...

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$315.70USD/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.

Confirm fitment before ordering →

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

Piston Description

This Piston is indexed for Part Number; YANMAR ENGINE MODEL: 4TNE84-AF, 4TNE84-EAF KOMATSU ENGINE MODEL: 4D84E-3FB, 4D84E-3B, 4D84E-3C, 4D84E-3D, S4D84E-1FD, 4D84E-3E, 4D84E, S4D84E Models: DOOSAN1340XLLoader KOBELCOSK40SR-2Excavator KOHLER15CCO, 15CCFO, 15R091, 15ROY, 15ROZGenerator KOMATSUBC70Drill Machine KomatsuPC45-1, PC40-7, PC40R-8, PC45R-8, PC40MRX-1-E, PC45MRX-1-EMini Excavator KomatsuRAM700-3Backhoe KomatsuSK510, SK815, SK820, SK820-5Skid Steer MUSTANG2040, 2042, 2044, 2050Loader YANMARYEG400DSHC, YEG400DSHS, YEG400DTHC, YEG400DTHSGeneretor ariens gravelyPRO CHIP 944. Compare reference number YM129002-22090 against the label on your existing Yanmar component before ordering.

Additional cross references on file: YM129002-22910, 129002-22090, 129002-22910. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

YM129002-22090 YM129002-22910 129002-22090 129002-22910

Applications

Part Number
YANMAR ENGINE MODEL: 4TNE84-AF, 4TNE84-EAF KOMATSU ENGINE MODEL: 4D84E-3FB, 4D84E-3B, 4D84E-3C, 4D84E-3D, S4D84E-1FD, 4D84E-3E, 4D84E, S4D84E Models: DOOSAN1340XLLoader KOBELCOSK40SR-2Excavator KOHLER15CCO, 15CCFO, 15R091, 15ROY, 15ROZGenerator KOMATSUBC70Drill Machine KomatsuPC45-1, PC40-7, PC40R-8, PC45R-8, PC40MRX-1-E, PC45MRX-1-EMini Excavator KomatsuRAM700-3Backhoe KomatsuSK510, SK815, SK820, SK820-5Skid Steer MUSTANG2040, 2042, 2044, 2050Loader YANMARYEG400DSHC, YEG400DSHS, YEG400DTHC, YEG400DTHSGeneretor ariens gravelyPRO CHIP 944

Specifications

Part Number	YM129002-22090,YM129002-22910,129002-22090,129002-22910

Fitment Notes

Brand or application signal: Yanmar 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.