Intake Plenum O-Ring Sizes

[jimmy p.]

I use the McMaster Carr part that Brandon posted. Works well enough for me. Its an O Ring after all (and being that I am the caretaker of (5) S14 powered vehicles, the lifetime supply for $15 including shipping is pretty cool).

Plus, my local dealer has not had a single E30 M3 or S14 part that I didn't order in stock in (2) decades, so anything I can get from McMaster Carr, delivered to my door, arriving the next day, when the order goes in anytime before 6:00 PM is a winner to me.

[NickB]

Im not really too worried about, I just didn't think the intake O-rings had to be anything all that special and not really into the idea of $5 each, lol.

[Brandon]

Is $4.69 each for something you will likely replace once every 10 (or more) years really worth fretting over?

I don't know if this is the exact size, but this example from McMaster-Carr comes in packs of 25 for almost $11. Sure, you have all you could ever need, but you have no idea if they are the proper spec/tolerance/material needed for the S14. In addition, you will have to pay shipping, where you can pick the BMW parts up at your dealer.

http://www.mcmaster.com/#9262k305/=13jx6rq

[NickB]

Thanks!

[Jim M3]

50mm I/d x 3mm

[NickB]

Anyone have a size for these? Ive seen mention of people getting suitable o-rings from hardware stores, but no mention of a size.

[caneswell]

Hello,

Does anyone happen to know the size of the 4 o-rings between the plenum and the runners and the throttle bodies?

I'd prefer not to be charged dealer prices for some simple o-rings

I believe the part number is 13541307768