How do I confirm pilotpart182657 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

Alternator 4939018 for Cummins Engine 6CT 6BT

For Cummins Alternator

Alternator 4939018 for Cummins 6CT Engine

OEM / REF: 4939018SKU: pilotpart182657

Alternator 4939018 for Cummins Engine 6CT 6BT is a Alternator replacement part indexed for Cummins · 6CT and Cummins · 6BT, with 3 application records on file. Match OEM part number 4939018 and confirm fitment for Cummins Engine Spare Parts before ordering.

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$339.99USD/EA

~~$48,299.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Aug 20 – Aug 27
10	Aug 18 – Aug 25
50	Aug 16 – Aug 23

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.

Alternator Description

This Alternator is indexed for Cummins · 6CT; Cummins · 6BT; Cummins s: Fit for Cummins Generator: L8.9. Compare reference number 4939018 against the label on your existing Cummins component before ordering.

Additional cross references on file: C4939018. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

4939018 C4939018

Applications

Cummins · 6CT
Cummins · 6BT
Cummins s: Fit for Cummins Generator: L8.9

Specifications

Voltage	24V
Ampere	70A
Part Number	4939018, C4939018

Fitment Notes

Brand or application signal: Cummins Engine Spare Parts
Product family: Alternator
System category: Engine Spare Parts > Engine Auxiliary Components > Alternator
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.