yup 
these are new to me too, mine is an M51D25 OL, post 96 is M51D25TU OL which I guess must be when they changed, which was when the E39 started production.
![[Image: 10857197453_1a6f679d4f.jpg]](http://farm3.staticflickr.com/2867/10857197453_1a6f679d4f.jpg)
![[Image: rsz.php?username=chalkie&gap=0&size=800&...16_002.JPG]](http://thmb.inkfrog.com/rsz.php?username=chalkie&gap=0&size=800&image=IMG_9016_002.JPG)
this must be the later one, which wouldn't fit on my manifold as its a reverse of my turbo totally.
![[Image: 411259_orig0.jpg]](http://www.pcbonto.hu/portal/static/upload_apro/2010-09-29/411259_orig0.jpg)
these are new to me too, mine is an M51D25 OL, post 96 is M51D25TU OL which I guess must be when they changed, which was when the E39 started production.this must be the later one, which wouldn't fit on my manifold as its a reverse of my turbo totally.