How do I confirm pilotpart266139-01 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 4 Units 1 Set For Komatsu Skid Steer SK09J-2 Yanmar Engine 4TNE98 Komatsu Engine 4D98E

For Komatsu Piston

Piston pilotpart266139-01 for Komatsu

OEM / REF: pilotpart266139-01SKU: pilotpart266139-01

Piston 4 Units 1 Set For Komatsu Skid Steer SK09J-2 Yanmar Engine 4TNE98 Komatsu Engine 4D98E is a Piston replacement part indexed for Komatsu Skid Steer SK09J-2 Yanmar Engine 4TNE98 Komatsu Engine 4D98E Piston 4 Units 1 SetOne Model Needs 4 Units and Model: Komatsu Skid Steer SK09J-2 Engine: Yanmar Engine 4TNE98 Ko...

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

$296.87USD/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.

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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 Komatsu Skid Steer SK09J-2 Yanmar Engine 4TNE98 Komatsu Engine 4D98E Piston 4 Units 1 SetOne Model Needs 4 Units; Model: Komatsu Skid Steer SK09J-2 Engine: Yanmar Engine 4TNE98 Komatsu Engine 4D98E Including: Piston*4Units Piston pin*4 Units Piston Clip*8 Units Details: Yanmar Engine Models: 4TNE98-AC 4TNE98-ACG24 4TNE98-AD 4TNE98-ADS 4TNE98-AG 4TNE98-AMM 4TNE98-FB 4TNE98-SA 4TNE98-G1A 4TNE98-HYS 4TNE98-KM 4TNE98-NSR 4TNE98-TB 4TNE98-TBZ 4TNE98-TBL 4TNE98-TBW 4TNE98-TBA 4TNE98-WI Komatsu Enging Models: 4D98E-1A-TR 4D98E-1C 4D98E-1FB 4D98E. Compare reference number pilotpart266139-01 against the label on your existing Komatsu component before ordering.

Before checkout, compare OEM part number pilotpart266139-01, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.

Part Numbers and Cross References

pilotpart266139-01

Applications

Komatsu Skid Steer SK09J-2 Yanmar Engine 4TNE98 Komatsu Engine 4D98E Piston 4 Units 1 SetOne Model Needs 4 Units
Model: Komatsu Skid Steer SK09J-2 Engine: Yanmar Engine 4TNE98 Komatsu Engine 4D98E Including: Piston*4Units Piston pin*4 Units Piston Clip*8 Units Details: Yanmar Engine Models: 4TNE98-AC 4TNE98-ACG24 4TNE98-AD 4TNE98-ADS 4TNE98-AG 4TNE98-AMM 4TNE98-FB 4TNE98-SA 4TNE98-G1A 4TNE98-HYS 4TNE98-KM 4TNE98-NSR 4TNE98-TB 4TNE98-TBZ 4TNE98-TBL 4TNE98-TBW 4TNE98-TBA 4TNE98-WI Komatsu Enging Models: 4D98E-1A-TR 4D98E-1C 4D98E-1FB 4D98E

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.