im replacing my radiator and the coolant level sensor on top is plastic and broke into pieces. since a new one is outragiosly expensive. Does anyone know the thread pattern for the hole in the radiator so i could plug it? I will ground out the wire to turn off the buzzer of course.

 

get one USED off the Forum(Sec Gen Parts For Sale Section).I Don't want to Come off as a Nutbar,but Grounding the Sender will make it operable.That is not good.The Engine Won't have a Warning Device if the coolant is Low,and BAM.New engine..and since you just put in a new Rad,You are gonna Need to know if the Cooling system has Air,and IF it needs to be Bled...The Sender tells you that..

 

I 2nd this one

 

Mazdatrix has the S4 one thats $35 and should fit if you change the connector.

 

Yeah get the s4 one from Mazdatrix or Ray Crowe from Malloy Mazda. Don't get a used one, they all crumble. I just replaced mine a couple weeks ago.

 

I got one that works great from a local napa place and it was like 10 bucks.
If you have trouble, take your old pieces and compare them to the catalog they have there, the one I got is pretty identical.