How do I confirm pilotpart266573 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

For Cummins Piston

Piston 4944477 for Cummins

OEM / REF: 4944477SKU: pilotpart266573

Piston 4944477 for Cummins QSB3.3 Engine Komatsu Excavator is a Piston replacement part indexed for Part Number and Cummins s: Engine:Cummins QSB3.3 Excavator:Komatsu, with 3 application records on file. Match OEM part number 4944477 and confirm fitment for Cummins Engine Spare Parts before ordering.

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$247.99USD/EA

~~$29,099.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 23 – Oct 30
10	Oct 21 – Oct 28
50	Oct 19 – Oct 26

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; Cummins s: Engine:Cummins QSB3.3 Excavator:Komatsu; Komatsu s: Engine: Cummins QSB3.3 Excavator: Komatsu. Compare reference number 4944477 against the label on your existing Cummins component before ordering.

Before checkout, compare OEM part number 4944477, 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

4944477

Applications

Part Number
Cummins s: Engine:Cummins QSB3.3 Excavator:Komatsu
Komatsu s: Engine: Cummins QSB3.3 Excavator: Komatsu

Specifications

Part Number	4944477

Fitment Notes

Brand or application signal: Cummins 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.