Gasket illustration – not the actual part
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Gasket illustration – not the actual partDiesel Parts Direct logo

Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTLower Gasket Sets

DS-3959797 Oil Pan Gasket For Cummins Engines

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

OEM #: 3959797SKU: DS3959797

Ships in 1-2 days

$47.97

Taxes and Shipping are calculated at checkout

Return with 20% Fee

This is an Oil Pan Gasket for the following engine models:

  • 4B3.9
  • 6B5.9
  • ISB
  • ISD
  • ISF
  • ISG
  • QSB
SKU DS3959797
OEM Number 3959797
Part Type Lower End Gaskets
OEM Brand CUMMINS

Aftermarket 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.