Contact us
Close contact box

Metra 40-LX21 Antenna Adapter

Connect an aftermarket antenna to the factory radio in select 2009-up Toyota, Lexus, Scion, and Subaru vehicles

Item # 12040LX21

Find what Fits your car

Item # 12040LX21

In stock

About the Metra 40-LX21 Antenna Adapter

Metra 40-LX21 Antenna Adapter

This antenna adapter lets you connect an aftermarket antenna to the factory radio in select 2009-up Toyota, Lexus, Subaru, and Scion models.  One end has a female Motorola connector, and the other end has a male antenna connector. You'll also need another antenna adapter if you are connecting an FM modulator to your factory radio. Warranty: 60 days.

What's in the box:

  • Toyota/ Lexus/ Scion/ Subaru vehicle antenna adapter cable
MFR #40-LX21

Customer reviews

Loading reviews...

Metra 40-LX21 Antenna Adapter reviews

Average review:

4 reviews

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee purchase (What's this?)



Crutchfield response

<< >>

More details on the Metra 40-LX21 Antenna Adapter

Product Research


Compatibility: This antenna adapter allows you to connect an aftermarket antenna to the factory radio. This adapter is for select 2009 and up Lexus/Toyota/Scion/Subaru vehicles.

Installation Note: A blue wire is attached to the antenna adapter. When installing the adapter, the blue wire should be connected to the antenna turn-on lead of your new power antenna.

Loading accessories...

Customer Q&A

Crutchfield asked: Why did you buy this?
To interface the adjunct HD receiver to my stock radio antenna. [ Parrotboy  Apr 29, 2017 ]
I need to connect a ten CD player to the stock radio in tundra. This is used for long trips. [ Richard  Jul 03, 2016 ]
Larry helped me out with what I exacted needed and he had a great response time with the information. Thanks a ton, Larry. Larry's Bio: [ William  Feb 28, 2016 ]

Loading articles...