My 2010 Mazda3 2.0 threw a PO126 Engine Code: "coolant thermostat" so I purchased this for replacement. It came quickly and seems like it's of excellent quality, probably as good as the OEM. I tested it in a pot of hot water and it opened at F 180 as per specs. I have not installed it because I have since concluded, based on information in Mazda forums, that this is a very common problem and many Mazda owners have their fault codes return after only a few months every time after replacing their thermostats (regardless of brand), and therefore this problem might often be a recurring computer glitch. I'm getting better than 30 mpg in mixed driving, and my heater typically heats up quickly, so in my case perhaps the computer is the problem, so why replace the thermostat. Also I have replaced my upstream O2 sensor 2x already - this is another common problem with these cars - and that code keeps returning as well, so I'm thinking these two problems might be a related computer glitch in these cars. I hope this helps everyone out there.Read full review
Verified purchase: Yes | Condition: New
Fit perfect,works great, 2008 Mazda 3, S 2.3 hatchback
Verified purchase: Yes | Condition: New
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Thermostats & Housings
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Save on Thermostats & Housings