Thermostat illustration – not the actual part
Diesel Parts Direct logo
Roll over image to zoom in Click on image to zoom
Thermostat illustration – not the actual partDiesel Parts Direct logo

Aftermarket parts may appear slightly different, including the packaging.

CaterpillarC SeriesThermostats

DS-4177782 Thermostat For Caterpillar C4.4 And C6.6 Diesel Engines

(Includes Connector)

OEM #: 4177782SKU: DS4177782

Ships in 1-2 days

$122.47

Taxes and Shipping are calculated at checkout

Special Order Item - not eligible for return

The DS-4177782 thermostat assembly for Caterpillar engines is an essential component for optimal engine temperature regulation and includes a connector. This thermostat is compatible with the following Caterpillar diesel engine models:

  • C4.4
  • C6.6
  • C7.1
SKU DS4177782
OEM Number 4177782
Part Type Thermostats
OEM Brand CATERPILLAR

Aftermarket warranty

View full warranty details
  • 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

View full shipping policy

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.