Thread: DISA 0 Ring
View Single Post
  #28  
Old 02-19-2011, 10:03 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,476
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by pleiades View Post
It's listed for M52TU engines as a $2.21 part on RealOEM (part # 11617504543).
It's not listed for (my) M54 engine.

Quote:
Originally Posted by pleiades View Post
OK, just got my $2.50 version from PelicanParts.com. It measures approx. 50 mm internal diameter (with me trying to get it to stay in a perfect circle) and is 3.2 mm thick, so about 56 mm OD, give or take a few tenths ..... And it's green .......
So, with a bit of fudging to match standard measurements, that seems to make the "M52TU" DISA o-ring size something like:
  • 50x3 mm METRIC or something like 2 13/64, 2, 1/64 inches SAE
Let's summarize what we know & need:

SIZE CONVENTION:
  • Metric
    • inside diameter x thickness (in millimeters)
  • SAE
    • outside diameter, inside diameter, thickness (in inches)
BMW MODEL: E39 528i
BMW ENGINE: M52TU
DISA O-RING BMW P/N: 11617504543
DISA O-RING SIZE: 50x3 mm, (I get something like 2 13/64, 2, 1/64 SAE)
DISA O-RING COLOR: green
DISA O-RING MATERIAL: ?

BMW MODEL: E39 530i
BMW ENGINE: M52
DISA O-RING BMW P/N: ?
DISA O-RING SIZE: ?
DISA O-RING COLOR: ?
DISA O-RING MATERIAL: ?

BMW MODEL: E39 525i
BMW ENGINE: M54
DISA O-RING BMW P/N: ?
DISA O-RING SIZE: ?
DISA O-RING COLOR: ?
DISA O-RING MATERIAL: ?

BMW MODEL: E39 540i
BMW ENGINE: M62
DISA O-RING BMW P/N: ?
DISA O-RING SIZE: ?
DISA O-RING COLOR: ?
DISA O-RING MATERIAL: ?

Last edited by bluebee; 02-19-2011 at 10:06 AM.
Reply With Quote