Motorad 7426-190 Fail-Safe Thermostat 190 °F Engine Coolant Thermostat Fits Dodge Ram 2500 98–23 3500 98–23 4000 06–13 4500 08-23 5500 08-23 Ford F-650 -10 F-750 10-12

EASY REPLACEMENT AND OEM PERFORMANCE FOR A FRACTION OF THE PRICE

Swapped this out while I was changing the water pump on my 3500. Temperature stabilizes exactly where the OEM thermostat did. Funny thing was that the water pump I got from Amazon was only about 10 bucks more than the thermostat. Time will tell for both but if you only need to swap out a thermostat on a 5.9 Cummins, it is super easy. Plenty of help on youtube.

Easily installed and I have heat now

Looks like a factory replacement

Product is as advertised

Love it great product!

Stopped working after a month. It was stuck shut in making my truck overheat since I just replaced it. I didn’t think that was the problem but I got one from O’Reillys. I never returned so I installed that one and it worked perfectly. Do not buy this crap.

Worked as expected.

Good thermostat but did not come with the gasket