I installed a Gates 33009S 195 degree after my Hughes install and haven’t had issues.
a Cummins branded 180 thermostat is the bomb diggity.
I have an 06. Had the same issue. Bought a cheap thermostat which turned out to be no good but acted the same as the old thermostat. Then, I changed EVERYTHING else in the coolant system, lol. Switched to Gates, problem solved.
I did notice before I recently got safety/emission test for plate renewal, i wanted to confirm the I/M readiness had ran, that at idle, the full trims were extremely rich. I'm leaning towards the lower tstat having something to do with that. I have a 195 motorad(blah) that i had just installed before the plenum work. ECT didn't break 178 degrees on a highway cruise at 95+ degrees. That seems to be right at the threshold for the current dtc.
Write your review about thermostat
Help others - share your experience with this part.
Voted AGAINST engine oil RAVENOL on the rating page
The brake pads OEM Alfa Romeo got the first review!
The brake caliper OEM BMW got the first review!
The brake pads OEM Infiniti got the first review!
For wiper blades PIAA already 100 reviews.
For battery Energizer already 25 reviews.
In the rating best water pump already 12 brands participate!
In the rating best timing belt already 13 brands participate!
In the rating best head gasket already 3 brands participate!
In the auto rating oil filter for Volkswagen Passat already 5 brands participate!
In the auto rating brake pads for Mazda 5 already 10 brands participate!
In the auto rating tires for Subaru Outback already 50 brands participate!
For cabin filter Fram already 25 reviews.
Voted AGAINST engine oil RED LINE on the rating page
Voted AGAINST engine oil PENNZOIL on the rating page
This part for Dodge RAM is made around the world. We have reviews for thermostat manufacturers from countries such as: USA, Israel .
In March 2026, the ranking of thermostat for Dodge RAM on PartReview included 3 manufacturers. It is based on 4 reviews and 12 votes.
Last month, PartReview users preferred Gates. 50% of positive votes went to this manufacturer.
In second place: thermostat Cummins — 25%.
Third place: MotoRad with 0% of the votes.
In the overall ranking of thermostat, which aggregates opinions of owners of different car makes and models, these brands hold the following positions:
After seeing which thermostat owners of Dodge RAM prefer, check other popular parts for this car. In March 2026, leaders on PartReview were:
