How do I confirm pilotpart136702 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 Vacuum Pump

Air Brake Compressor 3991521 for Cummins

Q: What part numbers are associated with this Vacuum Pump?

3991521, 9111535520, ISD4.5, G5.9, ISF3.8, B4.5FORD, C1517e, C1717e, C2428e

OEM / REF: 3991521SKU: pilotpart136702

Air Brake Compressor 3991521 for Cummins Engine ISD4.5 G5.9 ISF3.8 B4.5 FORD CARGO C1317e C1517e C1717e C2428e is a Air Brake Compressor replacement part indexed for Part Number and Cummins Engine ISD4.5 G5.9 ISF3.8 B4.5 FORD CARGO C1317e C1517e C1717e C2428e Air Brake Compressor 3991521, with 3 application records...

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$845.52USD/EA

~~$29,699.00~~Save 97%

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.

Vacuum Pump Description

This Vacuum Pump is indexed for Part Number; Cummins Engine ISD4.5 G5.9 ISF3.8 B4.5 FORD CARGO C1317e C1517e C1717e C2428e Air Brake Compressor 3991521; Cummins Engine: ISD4.5 G5.9,ISF3.8 B4.5FORD CARGO:C1317e,C1517e,C1717e,C2428e. Compare reference number 3991521 against the label on your existing Cummins component before ordering.

Additional cross references on file: 9111535520, ISD4.5, G5.9. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

3991521 9111535520 ISD4.5G5.9ISF3.8 B4.5FORD C1517e C1717e C2428e

Applications

Part Number
Cummins Engine ISD4.5 G5.9 ISF3.8 B4.5 FORD CARGO C1317e C1517e C1717e C2428e Air Brake Compressor 3991521
Cummins Engine: ISD4.5 G5.9,ISF3.8 B4.5FORD CARGO:C1317e,C1517e,C1717e,C2428e

Specifications

Part Number	3991521, 9111535520

Fitment Notes

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