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Item: IM1T39555 Model: 40-GM20
Metra™ GM Radio antenna with mini adapter is provided with a mini plug. Antenna adapter has a connector with mini barbed or barbless plug to aftermarket radio.
Improve the receipt of radio transmission through your factory-installed car radio with this Metra GM radio antenna adapter. The adapter includes a mini plug that can be used to connect the adapter to an aftermarket or original equipment radio, and then to an aftermarket antenna. Once in place, you'll see an immediate improvement in the clarity of received radio signals and the available tuning distance.