🔧 Gates 33915 OEM Engine Coolant Thermostat - Improved SEO Review

This T-Stat appears to be well made and controls the temperature very accurately, always within 5 degrees of its 190 setting.

Fast delivery and easy installation. I've used this thermostat many times, it always works great and never leaks. I change them every five years along with the coolant.

Chinese garbage out of the box. The truck goes straight up to 220 degrees and drops (maybe/sometimes) to 180*ish. the heating pipes were hot, the radiator - air temperature. work in the pan on the stove was unstable. My truck consistently accelerates to 190°C no matter what it's doing, so seeing 220°C temperatures and having to stop was nerve-wracking. picked up napa one on the spot, truck drove back to work 190*. This is the second I have bought in 5 years and the quality has gone down

Very easy to install. One thing I didn't like was that there was no label on the thermostat telling you what temperature it was. I just wanted to make sure it's the right temperature setting. It wasn't even on the packaging. Not as much. Easy to install and work. In front of me the truck's temp was hovering over 200 and kept shivering down. Now it sits perfectly at 190. Only time will tell how long this unit will last. Looks and feels sturdy, but it's a Chinese detail.