Both will keep your coolant cooler. In my opinion, save your money.

 

I've been using the Motorad for 2 hot Houston summers now with no problems.
I did have to reduce the diameter slightly to make it seat properly since it
was a little too large. A file or grinding wheel is all you'll need, as it's a very
minor amount of material to remove.

I like seeing the needle a click lower than stock in these hot summers.

 

I've got the Jett. It fits without trimming, it's stainless, it's the fail-safe design. Yep it costs a bit more but it's worth it. A T-Stat failure in a Hemi would be a disaster. In this area I wouldn't let a few $$$ be a determining factor.

A lot of vendors are bundling these with DSP and other items. Good investment without a doubt.

--CC

 

The Jet was a perfect fit - just as good as the OEM, and looked more robust than the stock t-stat too. No familiar with the Motorad brand - it might be just as good as the Jet, but I doubt it. For the amount of money invested in this machine, I'd rather spend a little extra for the peace of mind that the stainless fail safe design provides.

 

Believe some tested all the available T stats and the Jet one was the only to open right at 180

 

The motorad is actually a 185* T-stat, even though it is marketed as a 180.

The Jett is a true 180 T-stat and will open full at 180.

 

Thanks to everyone for the great infomation

 

As I was looking into this mod I found that Motorad/valuecraft/whatever 4128 is actually a 185* t-stat. but everybody calls it a 180* t-stat. The Jet is actually a calibrated 180* t-stat.

In addition I liked;
the stainless construction,
the higher degree of accuracy or precision for more consistent temps,
the lifetime warranty,
the fact that it correctly fit the water neck without needing to freeze of file, and that it included it's own gasket.

Lastly I've used Jet before in other cars without issue.

 

I know this has been covered in other posts but does anyone have the fan parameter settings on the 180 deg thermostat?

 

I dropped all fan setting 20 degrees

 

once I get this tstat do I have reset anything with a tune or does the fan adjust to the new tsat?

 

you have to change the fan settings to accommodate the new TStat