I don't care whatever people say but me personally I will not go to any (BMW STEALER); N'less this part cannot be found anywhere around the internet.
A few months ago, I was looking to see how much it would cost me to buy just the parts from the stealers without having them doing the job for me.

I visited one in Bridgeport CT at the time for an estimation of: 8 spark plug
9 bottles motor oil
1 oil filter/air filter
Total came up to: $367.21 because stealer spark plug cost:$29.32 each
and I don't remember how much the other parts cost; but if I wanted them to do it for me, all together came up to:$ 621.71 for a simple tune-up.
I wen't back home, and searched on pelicanparts.com for the required spark plug and the other accessories for my car, I ordered all of them for less than $180.00
Once I'm a little bit experienced about cars, I've replaced everything by myself successfully and my engine started right-away from day one!

(01 X5 4.4i)
Peace out folk no stealer for me