How do I confirm pilotpart626707-8549667373304 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 Belt

Belt 3979344 for Cummins

OEM / REF: 3979344SKU: pilotpart626707-8549667373304

V-Belt 3979344 for Cummins Engine 4BT 6BT ISB 6.7L ISB QSB is a Belt replacement part for Cummins Seals, Filters & Maintenance Parts, categorized under Seals, Filters & Maintenance Parts > Belt. Use OEM part number 3979344 and confirm machine model, engine model, and serial details before checkout.

Stock: In stock
Condition: New
Fitment: Cummins Seals, Filters & Maintenance Parts
Category: Belt

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$70.00USD/EA

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

Confirm fitment before ordering →

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

Belt Description

This Belt is indexed for Cummins s: Fit for Engine: Cummins 4BT, 6BT, ISB 6.7L, ISB, QSB. Compare reference number 3979344 against the label on your existing Cummins component before ordering.

Before checkout, compare OEM part number 3979344, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.

Part Numbers and Cross References

3979344

Applications

Cummins s: Fit for Engine: Cummins 4BT, 6BT, ISB 6.7L, ISB, QSB

Fitment Notes

Brand or application signal: Cummins Seals, Filters & Maintenance Parts
Product family: Belt
System category: Seals, Filters & Maintenance Parts > Maintenance Components > Belt
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.