Ok i see will check if i have an o ring i can install, never even saw it had one as i could just see the other flat washer that mates with surface of ps container
https://www.myparto.com/en/i36398/bm...en-32411096499
https://www.realoem.com/bmw/enUS/sho...diagId=32_1485
32411096499
Cover
DIESEL
From:03/01/1998To:-Weight:0.041 kgPrice:
Part 32411096499 was found on the following vehicles:
3' E46 (07/1997 — 08/2006)
5' E39 (12/1997 — 12/2003)
5' E60 (02/2002 — 02/2007)
5' E60 LCI (11/2005 — 12/2009)
5' E61 (11/2002 — 02/2007)
5' E61 LCI (11/2005 — 05/2010)
7' E38 (12/1997 — 07/2001)
7' E65 (11/2001 — 07/2008)
7' E66 (03/2005 — 07/2008)
X3 E83 (01/2003 — 07/2006)
X3 E83 LCI (03/2006 — 08/2010)
X5 E53 (01/2000 — 09/2006)