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

Aftermarket parts may appear slightly different, including the packaging.

Cummins4BT / 6BTThermostats

DS-3967195 Thermostat Kit For Cummins Engines

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

OEM #: 3967195SKU: DS3967195

Ships in 1-2 days

$33.37

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

This is a Thermostat Kit for the following engine models:

  • 4B3.9
  • 6B5.9
  • ISB
  • ISD
  • ISF
  • ISG
  • QSB
SKU DS3967195
OEM Number 3967195
Part Type Thermostats
OEM Brand CUMMINS

Aftermarket warranty

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  • Orders are processed the same or next business day
  • Expedited shipping options available at Checkout
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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.