http://tinyurl.com/npcv84v
BMW (99-10) e39 e46 e60 etc Gas Fuel Cap +tether GENUINE oem
Brand new Gas Cap with tether, Genuine BMW.
These often cause a Check Engine light due to fume leaks.
part# 16 11 7 222 391, supercedes# 16 11 6 756 772
Genuine BMW part, recently made: not been lying around.