We blew up our Hemi, ordered a 195 degree thermostat for a restored engine but the seller sent us 203 and I didn't check before putting it in brought to the workshop! During break-in, the car warmed up more than I wanted, so I ordered this 180 Stat. Was shocked (and angry) when I spotted the 203. After installing this thermostat, the engine will be much happier and will not smell "hot" when shut off after driving. Highly recommended, let the engine last longer.