How do I confirm pilotpart188733 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

Ribbed Belt 3911584 for Cummins 4B 4BT 6B 6BT Engine

For Cummins Belts

Belts 3911584 for Cummins B3.9L Engine

OEM / REF: 3911584SKU: pilotpart188733

Ribbed Belt 3911584 for Cummins 4B 4BT 6B 6BT Engine is a Belts replacement part indexed for Cummins · B3.9L and Cummins · B5.9L, with 3 application records on file. Match OEM part number 3911584 and confirm fitment for Cummins Engine Spare Parts before ordering.

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$106.99USD/EA

~~$12,599.00~~Save 99%

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.

Belts Description

This Belts is indexed for Cummins · B3.9L; Cummins · B5.9L; Cummins · 4B; Cummins · 4BT. Compare reference number 3911584 against the label on your existing Cummins component before ordering.

Before checkout, compare OEM part number 3911584, 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

3911584

Applications

Cummins · B3.9L
Cummins · B5.9L
Cummins · 4B
Cummins · 4BT
Cummins · 4BTA
Cummins · 4BTAA
Cummins · 6B
Cummins · 6BT
Cummins · 6BTA
Cummins · 6BTAA

Specifications

Ribs	8
Belt Section	8/K
Part Number	3911584

Fitment Notes

Brand or application signal: Cummins Engine Spare Parts
Product family: Belts
System category: Engine Spare Parts > Belt Drive Systems > Belts
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.