BMW F series front door 100mm speaker adapater

This is an adapter for BMW F series front door to attach aftermarket 100mm speakers. Originally I designed if for F22 2 series coupe + ALPINE STE-G100S but it may fit for other F series cars / speakers.

There are many adapters in the market but somehow most of them are made from MDF material. I'm not a big fan of using wooden material in a car door. Plus, I designed a slot for BMW original “repair” connector (61138373583). This way, you can use the connector of the car without additional work. there is also a small path through in case you want to run wires for a separate tweeter.

I printed it as it is for the driver side (left side), and mirrored one for the passenger side (right side). Please check for your needs.

You will need:

• 2x (or 4x) M5 thread insert  such as https://www.amazon.de/-/en/ruthex-Threaded-Insert-Bushings-Ultrasonic/dp/B07YSVXWS8?th=1)