31 vote
I had the same exact car with same exact problem. I changed the thermostat once and it fixed it for about a year. The issue came back and I changed again and it fixed it again... So I'd say get an OEM one if you can.
our 2009 CRV was taking a long time to get to operating temperature and then fluctuating a lot while driving. a new thermostat fixed it.
Don\u2019t listen to these people I have an 08 ex Sam problem replaced thermostat 2 weeks ago in 15 minutes problem is gone
After getting a P0128 code and replacing the Tstat with an OEM equivalent from a parts house and my code coming back and then actually buying the OEM straight from the dealer fixing my code, I’m hesitant on what I should really put in my car since it seems to be sensitive to parts as well. I remember buying Tstats from AutoZone and never being a problem before.
I have a 2015 sedan and I’ve got 192,000 km and owned it since brand new and I’ve had that happen and changed the thermostat twice, just make sure you get OEM Honda thermostat and coolant as it takes a certain type. Make sure you
Burp the cooling system of all air and make sure you add enough coolant to the radiator and overflow, it’s fairly common for the thermostats to fail
I work at a Honda dealership in the mechanic field, and I would recommend the OEM thermostat, unless you have a rebuilt engine.
Stop using cheap thermostats. Get an oem honda unit and it will last and work correctly.
Your temp gauge is reading low because your mechanic is not using an OEM Honda thermostat. An OEM thermostat is designed specifically for your engine and the car will warm up quickly and the temp gauge will sit at the 50 yard line in any weather.
The Honda thermostat opened probably 50% more than the aftermarket, so lesson learned there.
Car takes forever to warm up and seems to always be running rich, so I'm guessing either the thermostat or ECT, or both, is/are bad.
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The brand is registered in Japan.
In March 2026, PartReview users have a positive opinion of OEM Honda thermostat.
PR Score — 83 out of 100, based on 10 reviews and 31 vote. 8 positive reviews, 1 neutral review, 1 negative review. Average rating — 4.4 (out of 5). Vote balance: 26 up, 5 down.
In the ranking of the best thermostat this part is at position 6, behind AISIN and MOPAR , but ahead of OEM Audi and Motorcraft.
Users also evaluated the qualities of OEM Honda thermostat:
See which car brands and models owners choose OEM Honda thermostat for. Below are car-specific ratings where this part is in the Top-3:
There are 14 comparisons of OEM Honda thermostat with other manufacturers on PartReview.
In particular, see which thermostat are better: OEM Honda or Motorcraft, OEM Honda or Duralast, OEM Honda or AISIN, OEM Honda or MotoRad, OEM Honda or OEM Nissan .
