Quote Originally Posted by Thatguy_JZ View Post
FYI the dipstick tube for the M56 is different, so unless you want to cap off the extra port on yours, try to get one from an M56. The harness is pretty much identical except the M56 one has provisions for it to bolt to the valve cover that the facelift M54 one doesn't have.
One clarification - the wiring in the harness is the same as ZHP (different than MS43), however, there are two differences:
1. Clips for screwing the harness housing to the M56 valve cover
2. The boot is larger and fits the opening on the M56 beauty cover

If anyone is interested, I have one that I am selling. They sell really fast.