View Single Post
Old 01-23-2013, 09:39 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 24,199
Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by doru View Post
CPS to engine O-ring p/n 12141748398 (Item #9)
CPS O-ring (Intake & exhaust) p/n 12141748398 (Item #6)
EDIT: I just realized that all the confusion may be due to the fact that one of these "CPS" above may actually be a CKP (crankshaft) while the other two are CPS (camshaft)!

Interestingly, here is a picture of a reputed CPS o-ring gone bad just now reported today:

These photos from this thread show the M54 intake CPS & exhaust CPS locations:

A good picture of the CPS o-ring is in this thread:
Attached Thumbnails
Click image for larger version

Name:	cps.jpg
Views:	34266
Size:	137.6 KB
ID:	358881   Click image for larger version

Name:	cps_leak.jpg
Views:	4278
Size:	69.2 KB
ID:	358882   Click image for larger version

Name:	cps_o_ring.jpg
Views:	7120
Size:	19.5 KB
ID:	358883   Click image for larger version

Name:	bmw_525_cps_o-ring1.png
Views:	137
Size:	139.0 KB
ID:	358886   Click image for larger version

Name:	camshaft_position_sensor.png
Views:	157
Size:	143.3 KB
ID:	358893  

Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 01-23-2013 at 01:59 PM.
Reply With Quote