You'll see, its too thick,The reviews say otherwise. I just bought one. My DISA doesn't need it and I won't be taking it out to try. I will measure this O-ring though. :thumbsup: $5 not too bad for a contribution post. I'll sell it to someone for $5 even PayPal after I'm done.
Will it fit on the DISA, sure will.
Will the O-ring slide inside the hole in the intake, no.
Will the O-ring seal the interface, yes, but not pretty.
Will the bolts on the DISA need to pull the ears against the intake and possibly deform the DISA, yes.
When the "proper" thickness O-ring is available for the same price, why use the wrong O-ring.
Yes, I looked a the reviews, IGNORANCE is bliss.
The seller stated " I have been buying these to match the OEM specifications of 11617504543" The BMW #11617504543 is the 1/8" O-ring for the M52 configuration.
It is a SAD, SAD state when people do not do their homework and continue to pass around incorrect information and/or the wrong parts. Especially when some people are "profiting" from selling something for the wrong application.
Funny how the Ebay seller stated he did not have a way to measure the O-ring but he used one on his car many years ago and it worked.
He could have easily purchased a General Tools digital micrometer with his profits and still had plenty of money left over.
Even is the description under one of the FAQ of the ebay seller he lists this which is clearly wrong "If you have the M52 or M54 engine, this is the O-Ring for you". The part he is selling is correct for the M52, but no the M54, they are of different design and size, the M52 has a "serviceable" O-ring from BMW, the M54 does not. The M52 uses a 1/8" O-ring, the M54 requires a 3/32" O-ring.
The guy says he has even searched the "forums" where he came up with some of his info. Well he did not do his homework properly.
Sorry, it is what it is. It really is annoying and sad these things happen. A few minutes of research and this guy would not be selling this O-ring and if the buyers payed attention they would realize the DISA will not seat properly when installing it with the 1/8" O-ring.