I am in the process of converting my Z4 to hydrolic steering (Z4M rack and hydrolics). As part of this process, I pulled the assist motor, controller, and angle sensor. The assist motor and controller are one unit (didn't look to see if they come apart). Everything is good (previous owner said he replaced the steering column a year before I purchased the car from him... so the thing is only 2-3 years old).
The motor assembly is NOT purchasable from BMW. Instead you have to purchase the entire column if the motor/controller go out. RealOEM lists the column at $2,617. So, since I'm offering a person the ability to rebuild/replace the part that actually goes out, I think $550 shipped is very reasonable. I am open to offers (PM me).
I also have the steering angle sensor (that goes at the bottom of the steering shaft). I figure $75 shipped is reasonable for that (again, open to offers).
Both of these parts work and work flawlessly (as of yesterday afternoon they were in my car providing power assist).
The motor assembly is NOT purchasable from BMW. Instead you have to purchase the entire column if the motor/controller go out. RealOEM lists the column at $2,617. So, since I'm offering a person the ability to rebuild/replace the part that actually goes out, I think $550 shipped is very reasonable. I am open to offers (PM me).
I also have the steering angle sensor (that goes at the bottom of the steering shaft). I figure $75 shipped is reasonable for that (again, open to offers).
Both of these parts work and work flawlessly (as of yesterday afternoon they were in my car providing power assist).