BMW - Z4 (E89) (2009 - 2016). Speaker Adaptor For BMW 5 Series F10 F11 F07 GT Underseat Sub Woofer Cable Plug. Speaker Adaptor For BMW 6 Series E63 E64 F06 F12 Underseat Sub Woofer Cable Plug. BMW sub-woofer adapter cable allows you to change the woofers underneath BMW front seats.
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