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What is the thread size of the oil drain plug?

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Old 11-04-02, 11:30 AM
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What is the thread size of the oil drain plug?

The one that's under the oil pan.
Old 11-04-02, 11:55 AM
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why do you ask such a question?

It should be either 17 mm or 19 mm, fine pitch threads.

I think, I may be wrong.. anyone else?
Old 11-04-02, 12:16 PM
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just wondering. so is it 17mm or 19mm?
Old 11-04-02, 01:22 PM
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lol. mines a 22mm. wierd huh? i guess it got replaced before. I would tell you but im not at work and I cant pull my plug to measure the threads. probably a 17mm. I dont work on many rx7's at work so I'm not sure. Ask me a Honda, Toyota, Ford, etc.. I would probably know
Old 11-04-02, 01:23 PM
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My Turbo II is 19mm
Old 11-04-02, 01:33 PM
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slap a wrench on it and find out what size you got.
Old 11-04-02, 01:59 PM
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hmmm... this is confusing me. maybe I should have asked for the thread size where the drain plug goes to.
Old 11-04-02, 02:04 PM
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Guys, he's looking for the thread size/pitch. Not the size of the bolt head.
Old 11-04-02, 02:07 PM
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Originally posted by Turbonut
Guys, he's looking for the thread size/pitch. Not the size of the bolt head.
exactly thanks for pointing that out turbonut
Old 11-05-02, 11:06 AM
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bump ^ anyone please?
Old 11-05-02, 11:14 AM
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Just pull the bolt and have it matched.


PS: do this when you are changing your oil and have a bud drive you to the hardware shop. Find out what pitch you got.
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