Anybody know what size seal for coolant tank

[emanuelme]

I need a new seal for the coolant tank... It's seen here as number 14 http://www.realoem.com/bmw/showparts.do?model=CA63&mospid=47490&btnr=17_0089&hg=17&fg=05

Anybody know what size this is so I can pick one up?

[emanuelme]

Nevermind... I found it... 14mm inside and 18mm outside... I'll call the dealer tomorrow to see if they have it.... its called a "Engine Block Coolant Drain Crush Washer" big name for a little part...