How do I confirm pilotpart266531-01 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 4921747 for Cummins ISX Engine Serial Number 79121892

For Cummins Piston

Piston 4921747 for Cummins Cummins Engine:ISX

OEM / REF: 4921747SKU: pilotpart266531-01

Piston 4921747 for Cummins ISX Engine Serial Number 79121892 is a Piston replacement part indexed for Part Number and Cummins Engine:ISX Part Number: 4921747, with 3 application records on file. Match OEM part number 4921747 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

$301.09USD/EA

~~$52,599.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 24 – Oct 31
10	Oct 22 – Oct 29
50	Oct 20 – Oct 27

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 Engine:ISX Part Number: 4921747; Cummins Cummins Engine:ISX. Compare reference number 4921747 against the label on your existing Cummins component before ordering.

Before checkout, compare OEM part number 4921747, 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

4921747

Applications

Part Number
Cummins Engine:ISX Part Number: 4921747
Cummins Cummins Engine:ISX

Specifications

Part Number	4921747

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.