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

Radiator cap for FB....???

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Old Aug 29, 2016 | 11:10 PM
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2stroke1971 (Neil)
 
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Radiator cap for FB....???

Trying to get a new radiator cap for my 1985 base model FB...12a

Ordered one online and it was far too big, it was part number 10329.
Went into an Advance auto parts store, and they had the 10329 listed as correct, but they also had a 10229. I chose the 10229. Again, too big. (As in the rubber plug part will not nearly fit into the throat of the radiator.

What am I missing here? What is the proper part number?

EDIT":: Pep Boys also lists the 329 and 229 caps like Advance.
Autozone lists a 7013....but it's got terrible reviews, loose fit, etc.....they list a vented cap but it is not available.

So can anyone recommend a good cap? Thanks in advance!

Last edited by 2stroke1971; Aug 29, 2016 at 11:20 PM.
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Old Aug 30, 2016 | 08:34 AM
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What raditor do you have? Maybe its not stock?
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Old Aug 30, 2016 | 03:09 PM
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Black Dragon Auto, $3.95...?


Originally Posted by 2stroke1971
Trying to get a new radiator cap for my 1985 base model FB...12a

Ordered one online and it was far too big, it was part number 10329.
Went into an Advance auto parts store, and they had the 10329 listed as correct, but they also had a 10229. I chose the 10229. Again, too big. (As in the rubber plug part will not nearly fit into the throat of the radiator.

What am I missing here? What is the proper part number?

EDIT":: Pep Boys also lists the 329 and 229 caps like Advance.
Autozone lists a 7013....but it's got terrible reviews, loose fit, etc.....they list a vented cap but it is not available.

So can anyone recommend a good cap? Thanks in advance!
Reply
Old Aug 30, 2016 | 03:31 PM
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Rockauto $2.50 More Information for STANT 10229
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Old Aug 30, 2016 | 07:25 PM
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From: https://www2.mazda.com/en/100th/
long story short there are THREE radiator caps.

there is the 12A one, which is ~3" in diameter, sounds like it doesn't fit. the GSL-SE one, which is the same size but different. and then the late cars, and some of the replacement radiators use a small cap, about 2" in diameter, if the big caps don't work, buy a cap for an 1986 Rx7
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Old Aug 30, 2016 | 11:47 PM
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2stroke1971 (Neil)
 
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Originally Posted by j9fd3s
long story short there are THREE radiator caps.

there is the 12A one, which is ~3" in diameter, sounds like it doesn't fit. the GSL-SE one, which is the same size but different. and then the late cars, and some of the replacement radiators use a small cap, about 2" in diameter, if the big caps don't work, buy a cap for an 1986 Rx7
Thanks man. I think thats got to be it. I'll exchange my 229 for one for the 86 tomorrow.
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Old Sep 1, 2016 | 10:09 PM
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2stroke1971 (Neil)
 
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Yep! That was it. Got one for a 1986, 13b fi and it fit. Thanks again!
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