ok i have a jdm s5 t2 and i went to the autozone for a thermostat it seem like i got the right one but the o ring seem to big and the thermostat would not seat correctly the part number on the old one said n350 where can i buy the right one that i need

 

Mazda OEM is the only way to go don't trust anything els on these engines

besides I've had poor luck with auto zone thermostats on other things in the past. especially the "failsafe" garbage. Faulty right out of the package... ya real fail safe..

 

i would go to atkins they will have the one you need

 

or mazdatrix.com if there is no dealership in your area.

 

wut would be the draw backs of running no thermostat?i have been running mine without one for over two weeks now. its been hot in socal, so i took it out to increase flow.

 

No thermostat=bad idea.

 

Mazda OEM.
Call Ray Crowe (888) 533-3400 or Ralph Hatley (650) 366-7400, they are both Mazda parts manager's and will give you a better deal than anyone else.

 

Taking it out will reduce flow to the rad as the thermostat is a bypass type.

Put it back in. The stock cooling system is designed to handle all conditions and if it's working well you should have no problems.

 

Discount Auto did me well...

 

thanks guys dont know what i would do with out yahs pretty soon i am getting a tune for my beast and i will have pics and vid in about a week or so

 

I have had numerous auto zone/ non-OEM thermostats fail on me. And the latest failure lead to a rebuild..