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Old 09-20-2020, 08:17 PM   #1026
Super Moderator
Member#: 185
Join Date: Aug 1999
Chapter/Region: South East
Location: Orlando, Fl
1999 Impreza wagon
Dark Gray Metalic


Hi peeps,

I just got a 2014 Impreza Sport Limited with the CM631UD head unit and wanted to upgrade to a larger screen OEM one to gain SAT radio. What would be my options without gong aftermarket?

Love the steering wheel controls!
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Old 10-15-2020, 11:46 PM   #1027
Bill Shoffner
Scooby Newbie
Member#: 82893
Join Date: Mar 2005
Chapter/Region: South East
Location: NC
2017 Outback Premium

Default Technical Support Guide for OEM radios for all Subarus MY '14 to '18


This above site will show you the OEM radio model numbers for all Subarus made from 2014 to 2018. You can add a system with navigation to a Subaru without navigation if you buy a compatible head unit. If your Subi has HK audio then only another radio with HK with or without navigation will work. If you don't have HK then you cannot add it by swapping radios.

Radios with Harmon Kardon amps and speakers are not interchangeable with the basic radio or the radio in most Premium models. The wiring is different and the HK radios do not have internal amps; the HK radio requires a separate HK amplifier that is probably located under one of the front seats.

For example, look at page 8 and find the 2017 Outback/Legacy. If you have a 2017 Outback Premium with the audio unit 86201AL85* FB856UM which has an internal amp built into the head unit then you can not substitute a HK audio unit 86201AL87* FB876UM which requires the external HK amp. The wiring harnesses are different and the speakers are different.

If you don't have Harmon Kardon then you can not add HK.

But, you can add a radio with navigation to a car that doesn't have navigation. The 2017 Outback/Legacy audio unit 86271AL85* FB856US (see 2017 Outback/Legacy on page 5) can be substituted for 86201AL85* FB856UM, because both radios have internal amp and use the same wiring harness.

In short, the HK system is not interchangeable with the non-HK systems.

You can interchange a non-HK system for a non-HK sytem to gain navigation and you'll only need an antenna for the navigation. (You can't use the builtin StarLink antenna for navigation, too) but an add on generic GPS antenna is cheap. Just pay careful attention to the Fakra plug on the end of the generic GPS antenna to be sure it will plug into the jack on the back of the radio. Fakra connectors are color coded and come male and female.

You could buy the OEM navigation antenna from Subaru or ebay but it will cost 3 times as much. Subaru does not install the OEM navigation antenna on models that don't have navigation. Many people assume that it will be there in case they need it, but you'll have to add one.

I had a 2017 Outback Premium with the 6 speaker system (no HK) and no nav. I stumbled across an OEM radio with nav in a junk yard for $65 so I added it. The two radios look exactly the same and were interchangeable. I bought a GPS antenna on Amazon for $12, took the plastic Fakra casing off the plug to make it plug into the back of the radio. Fakra plugs can be a nightmare because you must have the right one or it won't fit the jack. Removing the plastic from the metal plug solves that problem. I also added a Pioneer mini amp, 6 new co-axial speakers and a powered sub but that's a story for another day.

I don't have an Impreza but I check this forum occasionally for useful info. If you reply to this post then I'll try to help you if I can. But the radios in Imprezas may be enough different from Outback radios that I may not be of use to you. The link above is my contribution to this forum.

I agree that this topic should be subdivided to make it easier to use.
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