How do I confirm pilotpart266587-01 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 5303778 for Cummins Engine ISL9.5

For Cummins Piston

Piston 5303778 for Cummins s: Engine:Cummins ISL9.5

Q: What part numbers are associated with this Piston?

5303778, ISL9.5, ISL8.9, ISC8.3, 2872069

OEM / REF: 5303778SKU: pilotpart266587-01

Piston 5303778 for Cummins Engine ISL9.5 is a Piston replacement part indexed for Part Number and Cummins s: Engine:Cummins ISL9.5. Match OEM part number 5303778 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

$198.79USD/EA

~~$52,599.00~~Save 100%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

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 ISL9.5. Compare reference number 5303778 against the label on your existing Cummins component before ordering.

Additional cross references on file: ISL9.5, ISL8.9, ISC8.3. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

5303778 ISL9.5 ISL8.9 ISC8.3 2872069

Applications

Part Number
Cummins s: Engine:Cummins ISL9.5

Specifications

Part Number	5303778

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.