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Koyo Radiator drain plugs.

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Old 03-31-07, 07:35 PM
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Koyo Radiator drain plugs.

Anyone have a source for these? I can't find them anywhere and they are not the same as the stock mazda drain plug. Any help would be appreciated.
Old 03-31-07, 11:00 PM
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Originally Posted by f1blueRx7
Anyone have a source for these? I can't find them anywhere and they are not the same as the stock mazda drain plug. Any help would be appreciated.
He's got them > www.absoluteradiator.com
Old 03-31-07, 11:15 PM
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Didn't see them on the site, but I sent him an email. It's worth keeping a stock of them because they break often.

Thank you!
Old 03-31-07, 11:25 PM
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Those plastic ones break so easily.
I recommend going to Ace Hardware and finding the threading and just getting a bolt,some washers,and a rubber seal.

That's what I've used on the air bleed with great success.
Old 03-31-07, 11:27 PM
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I used some drain plug I found at Advanced Auto, I just had to cut it to length. That lasted about a year so I said screw it and I found a couple of bolts that fit the size and thread perfectly, I had to cut the bolt to length also. The bolt has a 6 or a 9 stamped on it and I don't remember where it came from in the engine bay.
Old 04-01-07, 08:47 AM
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Originally Posted by 95nracer
The bolt has a 6 or a 9 stamped on it and I don't remember where it came from in the engine bay.
It shouldn't matter what grade the bolt is, but probably should be stainless.
Old 04-01-07, 10:38 AM
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If you are breaking the plastic ones then you are over tightening them. They do not require much torque and they have a rubber seal so sealing is not an issue.
Old 04-01-07, 01:15 PM
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a socket head cap screw with a wide flange, preferably stainless in the right thread, the right length with a copper gasket.
Old 04-01-07, 02:15 PM
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LOL, how about I fill you guys in on a 10 dollar secret. I have seen many a koyo with a bad drainplug. Find a spare 86-91 intermediate iron, pull the metal hex drain plug out of it (where the driver motor mount bolts up) and it threads right into the koyo. In fact, I have one in my car's koyo right now.

This is also nice because the hex plug is long, and you can use a socket and extension to remove it, versus fishing around up inside the plastic underbelly cover with a screwdriver.
Old 04-01-07, 02:57 PM
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Originally Posted by RotaryResurrection
LOL, how about I fill you guys in on a 10 dollar secret. I have seen many a koyo with a bad drainplug. Find a spare 86-91 intermediate iron, pull the metal hex drain plug out of it (where the driver motor mount bolts up) and it threads right into the koyo. In fact, I have one in my car's koyo right now.

This is also nice because the hex plug is long, and you can use a socket and extension to remove it, versus fishing around up inside the plastic underbelly cover with a screwdriver.
ARCHIVE. +1.

I already went and bought the damn bolt... but I'll probably just do this instead.
Old 04-01-07, 11:36 PM
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You can paypal the 10 dollars at your convenience.




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