Cat Acert thermostats

there may be from an aftermarket supplier, maybe try pittsburgh power, but not from cat, they specially engineer the cooling system on the acert's to run hotter than the old E model so as a way to keep emissions down, working along with the dual turbo and vva. I would try washing out your air2air and radiator and see if that doesn't help the hot day issue.

 

Pittsburg Power sells 180 thermstats I have them in my MXS I was hoping it might help keep water temp. down. Thought maybe if it started off a few degrees cooler it wouldn't heat up so fast BUT I cant see that it made much of a differance. If you have to have them out for some reason I would change them but not just for the sake of trying to get it to run cooler. I changed mine when I put on a exhaust manifold form PDI(which I strongly recomend!)

 

Cat and Cummins thermostats are made just alike and if you wanna try a cooler temp you will have to get it from Cummins.

 

does m11 have more than 1 stat my truck runs a little hot to me about 180 empty but loaded it will get up to 200 fast and fan cools it down preety fast....

 

Cat thermostats by part number and opening temperature, these will fit BXS/NXS/MXS Acerts, C15s, C16s and C12s etc. not sure about the later DPF Acerts.
4W4011- 170F
2485513- 180F
2477133- 190F, this one is factory fitted to your engine.
7W0371- 200F

 

pitts power has 180 stats but that wont fix your problem you need bigger cooling capasity that means a bigger raitiator core.

 

.5MPG! Better throttle response.