This upgrade may be a bit too flashy for a lot Z3 owners, but for those owners with a chrome fettish (such as myself) MG Racing sells chrome Z3 gas caps. These are original BMW gas caps that have been chromed by MG Racing. Simple direct replacment for your stock gas cap, and installing it couldn’t be easier.
To install the MG Racing chrome gas cap, you will need about 10 minutes of time and a screw driver with a Torx-30 tip.
The gas cap is held/clamped in place with two torx-30 screws. The two holes in the support allow you access to the torx-30 screws. You don’t have to remove the screws, as the screw head are really just clamping/holding the gas cap on.
It took quite a bit of force to initially break the paint seal, I took this as a suggestion to use just as much force when I re-installed the chromed version.
There are two add-on parts that you will need to move from your stock gas cap to the new gas cap. There is a rubber bumper that slides out of place pretty easily. The black plastic thing is designed to hold your gas cap while you are refilling you car. It’s a little harder to pop out of place, but still quite easy to move from one gas cap to the other.