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Thermostat... just a good one

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I know the good Cummins thermostat is expensive..... Maybe not

 

What Brand is a good reliable  thermostat . genos sells the Gates -33915

Edited by GSP7

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  • NIsaacs
    NIsaacs

    The standard in stock Napa thermostat is Motorad for the 180 or 190. They offer a 190 Safe-T-Stat special order, it is the fail safe type. They also offer a stainless steel one, special order.  

  • NIsaacs
    NIsaacs

    Anyone that works on their own vehicle knows this. My point is, oem has different specs than the aftermarket, they will fit and work. Aftermarket will usually fit and might work.

  • NIsaacs
    NIsaacs

    I don't know who the vendor is, but whoever it is they will manufacture to Cummins specs. You say the 2019 is different but without a part number it is hard to say. That t-stat looks like a 12 valve s

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  • Mopar1973Man
    Mopar1973Man

    I left the factory 190°F thermostat for a Gates 200°F and gained performance and MPG.

  • Mopar1973Man
    Mopar1973Man

    Some quick guidance on the Quadzilla. You will see about 204℉ to 210℉ coolant temperature on average. The bonus is the oil temperature measured at the test port on the oil filter head, you should be f

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Mine is a Gates 33956 180° thermostat. Just for fun yesterday I took a screen capture video of the IQuad app on my short 5km drive home. My coolant warmed up to 183, cooled to 177, and settled around 179 for most of the drive, with the odd cycle from 177 to 181. I expect a wilder swing when we hit -30° temperatures in winter.

  • 5 years later...

Has anyone tried the Motorad 7426190 fail safe thermostat it is 190 degree thermostat but depending upon the quality of it, I like the idea of a fail safe thermostat that fails in the open position.

I've had good luck with Motorad Failsafe thermostats in other vehicles. Haven't had one actually fail yet. Just installed one in my truck, have not put any miles on it yet. Saving my pennies for a Quadzilla. Will probably go to a 200 degree thermostat when I get that.

  • Owner
36 minutes ago, BFH_Metalworks said:

Will probably go to a 200 degree thermostat when I get that.

Some quick guidance on the Quadzilla. You will see about 204℉ to 210℉ coolant temperature on average. The bonus is the oil temperature measured at the test port on the oil filter head, you should be floating 165℉ to 175℉ in proper timing.

Just a personal note, I'll be heading into getting a tuner for the 3rd Gen trucks and start building tunes for Common Rail engines in the near future. cummins

  • 1 month later...
  • Staff

I agree with Moparman, in that if you live where it gets cold with snow and ice, then the 200 degree + thermostat is the best way to go.

I installed a 205 degree Mishimoto t-stat in my 2001, and it made it warmer. My heater core doesn't put out enough heat, so I'll be installing a new heater core here shortly.

My AC blows cold, but I'm installing a new evaporator core at the same time since they take the brunt of all the dirt and crap that blows in from the cowl.

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