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This Antenna Adaptor fits many European vehicles, including the new 2008-up SMART for two/451 and allows AM/FM radio when installing an after market car stereo. The adapter allows you to replace the factory stereo with any after market radio and receive AM/FM signals as the factory antenna adapter is not the standard after market size. Installation is straight forward and simple. If you are planning on changing the radio in your VW/Mercedes/BMW/SMART car, this Antenna Adaptor is typically required.Factory Antenna to Aftermarket Radio Adapter
For select 1988-2005 Audi/BMW/Mercedes vehicles
Factory antenna with flat plug to aftermarket radio
A capacitor is included to match impedance
Some newer European radios also have capacitors that do not allow this adapter to work properly (try using 40-VW12)