FS: 6.5" single subwoofer enclosure for BMW Z3 roadster - YouTube
BMW Z3: Subwoofer upgrade | Sound Motion
bmw z3 roadster center console subwoofer sub speaker compartment black 98-02 oem
Damaged BMW Z3 Roadster Late Factory Subwoofer Speaker Driver w Box USED OEM - Prussian Motors
BMW Z3 Model 81S Subwoofer - Integral Audio
Factory Auto Sound / FAS Group - Custom subwoofer enclosure for a BMW Z3 Roadster. 8" Hertz Energy woofer. 6.5" Hertz Energy components and a 5 Channel Hertz amplifier as the power