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Throttle body o-ring - how important?

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andyisavinit View Drop Down
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    Posted: 25 Oct 2020 at 21:55
Gen 1 RSVR 2003

My throttle body is missing this tiny 5-6mm o-ring. I assume it's supposed to seal for some sort of vacuum/air pressure purpose?

Number 13 here...


£16 inc postage !!

A bit much!

Is this really that important? Or will the standard airbox when bolted down seal it sufficiently enough?
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426hemi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:01
You sure it’s 13 as that one is £7, still daft money for a tiny o ring, you could probably buy a selection box for that much, if one was fitted originally I would definitely re instate one.
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andyisavinit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:04
Yeh its £16 when you add the postage. Mental!
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426hemi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:06
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andyisavinit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:12
Thanks hemi - that looks like a useful box to have
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426hemi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:15
You do get different size thickness of seals, if you look on the site they list them all but you do need one of the originals to measure, the multi box is handy to have for emergencies though.
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andyisavinit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:23
Yeh found another site (Fowlers - even more expensive LOL) listing that part number with D4 x2. So I assume that means 4mm with 2mm inside diameter. 1mm thickness obvs.
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426hemi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2020 at 22:33
That would be a thick and very small o ring.
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andyisavinit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyisavinit Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2020 at 08:40
D4 doesn’t mean 4mm. I just measured the hole. It’s 8mm. 
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