Went to pick up looking a new OE AC Delco replacement t-stat for my friends 1998 Bonneville today and noticed that it was the same t-stat as the Stant SuperStat in every way - except for the burnished stainless steel finish found on the SuperStat.

Stant, according to their literature, uses their own patented and trademark design and operating features on the SuperStat so I'm assuming that they must supplyAC Delco with these t-stats like they do for NAPA.

Another difference is that the AC Delco t-stat was priced a few dollars higher coming from a Pontiac dealer than what I paid for my 180 degree SuperStat. Has anyone else noticed the similarity?

Try to buy a lower running t-stat from a GM dealer and most parts departments will tell you that that don't recommend, sell, or use anything otgher than the OE 195, while charging way too much anyway.

I did notice that the bottom of, both, the Stant and the AC Delco were stamped STC, which stands for Standard Thomson Corporation - the division that makes t-stats for Stant (which they now own). So I guess I answered my own question.

The 180 is hard to pick up at Pep Boys or Straus Auto (Auto Zone has Robertshaw I believe but they seem to always be sold out) but NAPA always has the Stant SuperStat, although it'* almost the same price as the dealer offers. Even yunder $9 it'* well worth it for sure!

Nope I got mine from NAPA cost me a 5 bucks, no problems yet!

Even though I work for the General, I run a UAP/NAPA 180 T-Stat too.