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Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTOther Parts

Cummins 4089742 Vacuum Pump Repair Kit

Compatible With 4B3.9, 6B5.9, ISB, and ISD Engines

Genuine Cummins Part

OEM #: 4089742SKU: 4089742
$45.30

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

This is a genuine Cummins Vacuum Pump Repair Kit for the following engine models:

  • 4B3.9
  • 6B5.9
  • ISB
  • ISD
  • ISF
  • ISG
  • QSB
SKU 4089742
OEM Number 4089742
Part Type Miscellaneous
OEM Brand CUMMINS

Warranty

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Genuine Cummins parts warranty

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  • Orders are processed the same or next business day
  • Expedited shipping options available at Checkout
  • If same-day shipping is critical, please call to confirm availability

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Call any of our friendly Parts Dept. Specialists with your engine serial number, and we can quickly verify whether this part is the correct part for your engine — no guesswork.

Phone: 888.687.0539

Don't know how to find your engine serial number? Go to our Engine Help Center for assistance.