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-3973509 Oil Pan Gasket For Cummins ISB, ISC, And QSC Diesel Engines

OEM #: 3973509SKU: DS3973509

Ships in 1-2 days

$66.25

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

The DS-3973509 oil pan gasket can be used on the following engines:

  • ISC and QSC
  • ISB and QSB
SKU DS3973509
OEM Number 3973509
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.

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