How do I confirm pilotpart257095 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

Lower Engine Gasket Kit 4089759 for Cummins ISLE8.9L ISC

For Cummins Overhaul Gasket

Overhaul Gasket 4089759 for Cummins Cummins ISLE8.9L ISC

OEM / REF: 4089759SKU: pilotpart257095

Lower Engine Gasket Kit 4089759 for Cummins ISLE8.9L ISC is a Overhaul Gasket replacement part indexed for Part Number and Cummins Cummins ISLE8.9L ISC, with 3 application records on file. Match OEM part number 4089759 and confirm fitment for Cummins Engine Spare Parts before ordering.

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$531.29USD/EA

~~$8,228.00~~Save 94%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Aug 18 – Aug 25
10	Aug 16 – Aug 23
50	Aug 14 – Aug 21

Estimates from today; confirm exact lead time before payment.

Quantity

Confirm fitment before ordering →

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

Overhaul Gasket Description

This Overhaul Gasket is indexed for Part Number; Cummins Cummins ISLE8.9L ISC; Cummins s: Engine: Cummins 6CT, 6LT, ISC, QSC, ISL, QSL, ISLE8.9L. Compare reference number 4089759 against the label on your existing Cummins component before ordering.

Additional cross references on file: ISLE8.9L. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

4089759 ISLE8.9L

Applications

Part Number
Cummins Cummins ISLE8.9L ISC
Cummins s: Engine: Cummins 6CT, 6LT, ISC, QSC, ISL, QSL, ISLE8.9L

Specifications

Part Number	4089759

Fitment Notes

Brand or application signal: Cummins Engine Spare Parts
Product family: Overhaul Gasket
System category: Engine Spare Parts > Cylinder Components > Overhaul Gasket
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.