About this part
Front-door adapter bracket for mounting a 5.25-inch / 130 mm speaker at the factory mounting locations. The source includes a separate flexible seal file; mirror one bracket for the opposite door. The creator specifies four M3 threaded inserts, four M3 button-head screws, and three OEM mounting screws per bracket, and recommends ABS, ASA, or similar temperature-resistant filament for the bracket and TPU or similar flexible filament for the seal. Exact source fitment is 1994–2001 Audi A4 B5.