How do I confirm pilotpart229571 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

Fuel Injector 3973059 for Cummins Engine ISC 8.3L

For Cummins Injectors & Nozzle

Injectors & Nozzle 3973059 for Cummins ISC 8.3L Engine

OEM / REF: 3973059SKU: pilotpart229571

Fuel Injector 3973059 for Cummins Engine ISC 8.3L is a Injectors & Nozzle replacement part indexed for Cummins · ISC 8.3L and Cummins s: Fit For Cummins Engine: ISC CM850, QSC8.3 CM850(CM2850), ISC 8.3L. Match OEM part number 3973059 and confirm fitment for Cummins Engine Spare Parts before ordering.

Stock: In stock
Condition: New
Fitment: Cummins Engine Spare Parts
Category: Injectors & Nozzle

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$125.99USD/EA

~~$13,999.00~~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.

Injectors & Nozzle Description

This Injectors & Nozzle is indexed for Cummins · ISC 8.3L; Cummins s: Fit For Cummins Engine: ISC CM850, QSC8.3 CM850(CM2850), ISC 8.3L. Compare reference number 3973059 against the label on your existing Cummins component before ordering.

Additional cross references on file: 3973059nx, 0445120272. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

3973059 3973059nx 0445120272

Applications

Cummins · ISC 8.3L
Cummins s: Fit For Cummins Engine: ISC CM850, QSC8.3 CM850(CM2850), ISC 8.3L

Specifications

Part Number	3973059

Fitment Notes

Brand or application signal: Cummins Engine Spare Parts
Product family: Injectors & Nozzle
System category: Engine Spare Parts > Fuel System > Injectors & Nozzle
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.