thermostat for 97 lx450/ 170* or 180*

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For the 1FZFE (US) # 90916-03117) is marked 82'C and should open between 80-84'C (176-183'F) and should have a valve lift at least 10mm @ 95'C (203'F).
Most people here recommend to only use the Toyota part, not aftermarket.
 
Oh and Welcome to Mud
 
I went to local orielly’s and they showed two thermostats. 170* and 180* so I assumed since my code was coolant. It not hot enough it should be the 180*. I just bought this lx and thought PO just put the wrong one in.
 
In my opinion, this part lies at the intersection of critical and inexpensive. I and many others on this board would recommend you get the OEM Toyota thermostat, and the OEM Toyota rubber gasket which goes around it. There is a little shaker valve on the thermostat. Make you get that as close to true north/straight up as possible.
If you thermostat fails in the closed position you could overheat your motor, and that's a real bad outcome.
 
I went to local orielly’s and they showed two thermostats. 170* and 180* so I assumed since my code was coolant. It not hot enough it should be the 180*. I just bought this lx and thought PO just put the wrong one in.
if you are getting a coolant temp CEL code it is usually your O2 sensors
 
Most people here recommend to only use the Toyota part, not aftermarket.
Most people here recommend to only use Toyota parts for everything. I am not in this camp. There are some parts that I would only go Toyota while others I will go with a non-Toyota part. Toyota isn't the only company that makes good parts and many times I can buy the same part without the Toyota name on the box for 1/2 the price.

I just did mine and went with a Aisin thermostat for $14. I've had Cruisers for 35 years and have used other thermostats like Stant as well. I've never had an issue myself.
 
Most people here recommend to only use Toyota parts for everything. I am not in this camp. There are some parts that I would only go Toyota while others I will go with a non-Toyota part. Toyota isn't the only company that makes good parts and many times I can buy the same part without the Toyota name on the box for 1/2 the price.

I just did mine and went with a Aisin thermostat for $14. I've had Cruisers for 35 years and have used other thermostats like Stant as well. I've never had an issue myself.

Don't use Murray.

Toyota brand is only a couple bucks more than the aftermarket. That's why I go OEM.
 

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