5.25" rear speaker adapter for BMW 318ti e36 compact e36c

thingiverse

I replaced the blown rear speakers in my car with new ones. The unusual size of these speakers made it difficult to find a direct replacement. However, I discovered that the SAK-1203 bracket allows 5.25-inch speakers to be mounted in the rear without any modifications to the vehicle. Unfortunately, this adapter is hard to come by in the US and comes at a steep price. To save money and avoid hassle, I decided to make my own adapter and now the new speakers are securely installed.