180° THERMOSTAT KIT - GATES (ALT. FOR '98.5-'09 and '13-'24, 6.7L & 5.9L)

Item #: GATES-33956
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GATES 180° thermostat kit for '98.5-'09 and '13-'24 Dodge Cummins Turbo Diesel trucks equipped with the 5.9L or 6.7L engine.

Kit includes seals.

NOTE:This is an alternate temperature thermostat for '98.5 to '09 and '13-'24 trucks. OEM thermostat is 190° (#33915).


Write a review
Dec 9, 2016  |  By hanie cole
works like it is supposed to

Feb 19, 2017  |  By carlos hernandez
Fits and works perfect.

180 t stat
Mar 15, 2017  |  By Jason McBride
My 180 degree t stat is working great. Runs at 185 degrees while on the highways. The stock t stat that came out was a 190 from my 2015 ram 2500 6.7

Apr 5, 2017  |  By Mike
installs exactly as you'd expect. i've yet to see temps get over 185-187 since install. we're not in proper summer "OMG it's hot" weather yet, but i'm not anticipating problems. longevity remains to be seen but for the price you'd be hard-pressed to beat this thing with a stick.

Perfect Cummins Thermostat
Feb 5, 2020  |  By Jeff Hendrick
After a new Mopar / Cummins 190 degree F. OEM thermostat stuck partially open after 3 months, the truck would only get up to 168 - 170 deg. F. coolant temperature in January 2020 Ohio weather. Replacing the 190 stat with a 180 stat produced consistent coolant temps of 179 - 181, engine oil temp of 178 - 183, and Aisin AS69RC lower trans. temps of 163 F. from 168 f. Truck runs great, and with projected lower summer towing temps, a great upgrade all the way around. Thanks, Geno's Garage!

keeping it cool
Sep 22, 2021  |  By evan
quick change out from stock. the truck maintains low to mid 180s while driving on highway. one thing i noticed while sitting in traffic and with air off was the temp got up to 206. But once i turned on the a/c, it cooled to 183. The stock 190 thermostat would maintain a temp of 199-201 unless driving 80+mpg for extended time. I've only had the 180 thermostat in the truck for maybe 1-2k miles.

Install and Tech Information