Description of Jet Performance 10174 JET Thermostat
Designed to reduce engine temperature and produce more horsepower. Made from stainless steel. Allows the engine to operate at its peak efficiency. Provides a precise metering of water throughout the engine. Easy to use.
I bought this for my 1994 Impala. Once you install that thermostat and set the PCM to 180, the fans will turn on sooner. Your gas mileage is much better with a thermostat of 180. I usually program the 1st fan at around 209 and the 2nd at around 218.
Pros
Provides accurate water metering throughout the engine