How do I confirm pilotpart334355-8607343902968 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

Air Brake Compressor 3949095 for Cummins Engine 6C8.3 ISB QSB5.9 QSB5.9 6BT 6BT5.9 6CT8.3 QSB

For Cummins Brake Air Compressor

Brake Air Compressor 6BT5.9 for Cummins

OEM / REF: 6BT5.9SKU: pilotpart334355-8607343902968

Air Brake Compressor 3949095 for Cummins Engine 6C8.3 ISB QSB5.9 QSB5.9 6BT 6BT5.9 6CT8.3 QSB is a Brake Air Compressor replacement part for Cummins Machinery & Equipment, categorized under Machinery & Equipment > Brake Air Compressor. Use OEM part number 6BT5.9 and confirm machine model, engine model, and serial de...

Stock: In stock
Condition: New
Fitment: Cummins Machinery & Equipment
Category: Brake Air Compressor

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$559.00USD/EA

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.

Brake Air Compressor Description

This Brake Air Compressor is indexed for Cummins s : 6BT, 6BT5.9, 6CT8.3, QSB, ISB, 6C8.3, ISB CM550, QSB5.9 44 CM550, QSB5.9 CM550. Compare reference number 6BT5.9 against the label on your existing Cummins component before ordering.

Additional cross references on file: 6CT8.3, 6C8.3, 3949095. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

6BT5.9 6CT8.36C8.33949095

Applications

Cummins s : 6BT, 6BT5.9, 6CT8.3, QSB, ISB, 6C8.3, ISB CM550, QSB5.9 44 CM550, QSB5.9 CM550

Fitment Notes

Brand or application signal: Cummins Machinery & Equipment
Product family: Brake Air Compressor
System category: Machinery & Equipment > Attachments & Air Systems > Brake Air Compressor
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.