Thermostats/Flowkooler

The one on the left [ s/s tower ] is made in China. The all brass unit is an original made in USA.

Two things to note:
- the rated temp is the opening temp. Fully open [ full flow ] takes another 20-30*.
- I had to remove a Chinese 160 version from my engine because the engine ran too cool! Bench testing, I found it opened right about 160 but if the coolant cooled, it would not fully close until about 130-140*. No good. Have not tested the all brass version.