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Metra 40-HD21 Antenna Adapter

Works with select 2009-up Honda vehicles

Item # 12040HD21

This antenna adapter lets you connect an aftermarket antenna cable to the factory radio in your Honda.

Find what Fits your car

This antenna adapter lets you connect an aftermarket antenna cable to the factory radio in your Honda.

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Please click here for your Proposition 65 warning.

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Item # 12040HD21

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$7.99
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About the Metra 40-HD21 Antenna Adapter

This antenna adapter lets you connect an aftermarket antenna cable to the factory radio in your Honda. The adapter has a male Honda plug on one end and a standard female Motorola jack on the other. Warranty: 60 days.

This antenna adapter lets you connect an aftermarket antenna cable to the factory radio in your Honda. The adapter has a male Honda plug on one end and a standard female Motorola jack on the other. Warranty: 60 days.

You'll also need a second Honda adapter if you are connecting an FM modulator to your factory radio.

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What's in the box:

  • Honda vehicle antenna adapter cable (2009-up)
MFR #40-HD21

Customer reviews

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Metra 40-HD21 Antenna Adapter reviews

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Great Accessory for Install

Pete from Bethpage, NY on 7/1/2016

2012 Honda Civic LX

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Product worked as described. Made the install that much easier. Received part in 2 days and price was right. Thanks

Pros: Worked as advertised

Cons: None

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More details on the Metra 40-HD21 Antenna Adapter

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Features

Compatibility: The Metra AntennaWorks Honda vehicle antenna adapter cable (40-HD21) converts the Honda factory radio antenna plug to a standard motorola plug for installation of an aftermarket antenna in a 2009-up Honda vehicle.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
In the chat one of the experts Tyler listed it as a necessary part. [ PAUL B  Mar 12, 2018 ]
A
Connect aftermarket head unit to factory antenna [ Keith  Aug 17, 2017 ]
A
I am installing an aftermarket head unit in my 2012 Honda Civic LX. The couple reviews on the Crutchfield website indicate that this item works. [ MICHAEL J  Feb 24, 2017 ]

1 question already asked

Q
The blue wire on the Honda antenna adapter connects to ??
[ Ken  Oct 18, 2015 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Krissy  Oct 19, 2015 ]  Staff

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