You might look into this one as well:
http://www.roadstersolutions.com/page69.html
Not OEM, but it's clear so it doesn't darken the rear view, and it's a lot cheaper.
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[Current] Tesla Model 3 Performance
[Retired] Audi R8 V10 6MT, BMW i3 BEV, BMW i3 REx, BMW Z4 sDrive35i DCT, BMW 335i Coupe 6MT