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Metra 40-NI21 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1998-2014 vehicles from Subaru, Nissan

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• Factory Radio to Aftermarket Antenna Adapter
• select 1998-2014 vehicles from Subaru, Nissan Vehicles
• Nissan diversity factory radio with 2-pin connector
• Disables diversity functions

See compatible vehicles Learn more about the met-40ni21
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List price $14.99
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-13%

$12.99

 with warranty
4 payments of $4

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We confirm fitment and offer accessories for speakers. Please set your vehicle first if you would like to purchase more than one met-40ni21.

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Description


Metra brand icon

Authorized dealer

General Features:

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features


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Item Details


Manufacturer:

Model Number:

40-NI21

Weight:

0.25lbs

Internal SKU:

met-40ni21

Internal Product ID:

12853

Customer Ratings & Reviews


Metra 40-NI21 Antenna Adapter thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Simple and effective, good value!

This cable allowed me to connect an aftermarket antenna to the stock head unit (Bose) on my 04 g35 coupe. The original antenna was dying and getting spotty reception and thus needed to go. The HU itself is a pain to get to in my car, but the cable is fairly easy to install; you just unplug the old one and patch this one in and plug in a new antenna. Once everything was back in place, my radio was back to life, no hiccups so far, for about a month.

By PP on February 6, 2014

21 found this helpful



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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.