How do I confirm pilotpart250445 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

For Cummins Flywheel Housing

Flywheel Housing 3971667 for Cummins

OEM / REF: 3971667SKU: pilotpart250445

Flywheel Housing 3971667 for Cummins Engine ISBE QSB ISDE is a Flywheel Housing replacement part indexed for Part Number and Cummins s: Fit for Engine: Cummins ISBE, QSB, ISDE. Match OEM part number 3971667 and confirm fitment for Cummins Engine Spare Parts before ordering.

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$1,337.52USD/EA

~~$13,899.00~~Save 90%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 21 – Oct 28
10	Oct 19 – Oct 26
50	Oct 17 – Oct 24

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.

Flywheel Housing Description

This Flywheel Housing is indexed for Part Number; Cummins s: Fit for Engine: Cummins ISBE, QSB, ISDE. Compare reference number 3971667 against the label on your existing Cummins component before ordering.

Additional cross references on file: C3971667. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

3971667 C3971667

Applications

Part Number
Cummins s: Fit for Engine: Cummins ISBE, QSB, ISDE

Specifications

Part Number	3971667, C3971667

Fitment Notes

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