1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

1985 12a Stock Temp Sensor Thread Size?

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Old 08-27-17, 07:59 PM
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1985 12a Stock Temp Sensor Thread Size?

Does anyone know the thread size/pitch for the STOCK coolant temperature sensor under the oil filter pedestal on a 1985 12a? For example these:

More Information for STANDARD MOTOR PRODUCTS TS74T

More Information for AIRTEX/WELLS 1T1122

I searched the forums and internet and came up with just about nothing. I know its metric.
Old 08-27-17, 08:15 PM
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There are two different sensors depending on if the engine has a reman iron or not. Reference here: https://www.mazdatrix.com/79-85Electrical-Engine.htm

Not sure of the thread pitch.
Old 08-30-17, 10:28 AM
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I think it is a 1/8 BSPT (British Standard Pipe Thread) which is close to 1/8 NPT but there is a little play when screwing it in. I think I still have my temp sensor in my old 12A at home and can check later tonight.
Old 08-30-17, 10:30 AM
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I'm pretty sure I found my answer after a few hours of Google searching and using actual Mazda part numbers.

I believe it's m8 x 0.75




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