2002-2004 Subaru Impreza WRX Sedan

2002 • 2003 • 2004

By

Rick Carlton

Rick Carlton has served as a professional automotive/motorsports journalist, writer, researcher, editor, and publisher for thirty years. He has also served as a press/media consultant for a range of professional motorsports organizations. He contributed several vehicle profile articles to Crutchfield's Research Garage.

More from Rick Carlton

This article is an overview of your vehicle's audio system and its upgrade options. If you're looking for step-by-step instructions on how to install a car stereo or speakers in your Impreza WRX, there's nothing better than our exclusive Crutchfield MasterSheet™. This detailed, well-illustrated document is free with your Crutchfield order, or you can purchase one separately for $9.99.
Subaru WRX Sedan

Subaru WRX sedan (Crutchfield Research Photo)

Overview

The Subaru Impreza sedan originally rolled out in 1992 for the Asia-Pacific and European markets, and the WRX performance variant was added in 1994. After winning a host of international autocross and rally championships with the little pocket rocket, Subaru decided to bring the WRX model to the U.S. market — a very smart move. In 2000, Subaru offered a number of enhanced performance packages in the Impreza Outback Sport. In late 2001, the WRX officially made its American debut, blowing away the press and public with its impressive speed and freakish ability to hold the road in the most punishing conditions.

Factory system

During the 2002-2004 model years, the WRX featured an AM/FM/cassette deck with a built-in 6-disc CD changer, driving a 6-speaker system with the option for a factory subwoofer. The front doors house 6-1/2" midrange woofers and separate tweeters, while you'll find 5" speakers in the rear doors. The factory sub, when present, is a flat box under the driver's seat. Read on for tips on how to replace your old gear with stereo equipment that performs like the rest of your car.

Factory radio in the Subaru WRX

The factory radio in the Subaru WRX (Crutchfield Research Photo)

Replacing your factory radio

Removing the factory radio is fairly straightforward, and you can install an aftermarket single-DIN or double-DIN receiver in this Subaru.

You'll need to use the factory brackets in order to install a new car stereo. If you have already discarded them, you will have to order replacement brackets from your Subaru dealer. A double-DIN receiver fits right into the space left by the original radio, and Crutchfield offers a dash kit for installing a single-DIN receiver.

Crutchfield also offers a wiring harness to connect a new receiver with this Subaru's electrical and speaker systems. It comes with a detailed instruction sheet that'll help you connect the harness to the wires coming from your new stereo. Tthe installation parts are available at a deep discount, and you'll get an illustrated, step-by-step Crutchfield MasterSheet™ installation guide free with most car stereo orders.

Installation note:  Your parking lights may flash when you reconnect the battery after installing a new car stereo. You have two options to stop this flashing. If you still have the keyless entry remote, press "Unlock" to defeat the flashing. If you don't have the remote, you'll find an Emergency Programming Override Button located under the dash (check your Owner's Manual for the location). Turn the ignition to the ON position and press the Override Button at the same time.

Tools needed:  Phillips-head screwdriver,  panel tool

Shop for car stereos that fit your Subaru Impreza WRX

wrx front door with the panel removed

The front door, with the panel removed (Crutchfield Research Photo)

Replacing your factory speakers

The Subaru's doors aren't terribly deep, but there are still plenty of high-performace speakers that will fit.

Front speakers

In 2002 and 2003 models, the front doors hold 6-1/2" 4-ohm speakers mounted in a plastic bracket, along with separate tweeters near each door pull. You'll have to remove the door panels to access the speakers, but it's not much of a problem.

You can install an aftermarket 6-1/2" or 5-1/4" speaker in the front door, with the help of a mounting bracket that replaces the factory bracket. You'll also need a speaker harness to connect your new speaker to the Subaru speaker plug. Crutchfield offers both harness and the bracket at a deep discount with every speaker order.

The door is a little cramped, with an available mounting depth of only 2-3/16". You won't find many 6-1/2" speakers that'll drop right in without modifying the doors, but you will find a decent selection of 5-1/4" speakers that will fit.

subaru wrx front door woofer

The Subaru's front door woofer (Crutchfield Research Photo)

In 2004, the front door speaker changes slightly, but only if you have a factory sub under your front passenger seat. The factory 6-1/2" speaker sits in a different bracket, and you can drop an aftermarket speaker in without any problem. Although the space in the door is still pretty shallow,  you can cut out and remove the rear of the plastic cup that houses the speakers. This will create more depth and allow you to choose from a larger list of speakers.

subaru wrx front door tweeter

A front door tweeter (Crutchfield Research Photo)

The front door tweeters are 1-3/8" diameter with 13/16" mounting height, so keep those dimensions in mind if you decide to replace the original tweeters. You'll have to fabricate some kind of mounting bracket to put aftermarket tweeters in these openings. Crutchfield carries a universal backstrap that works great for these situations; it can be bent to cut to size as needed. No speaker harness is available for the tweeters, so you'll have to cut the factory wires, ot use a set of Posi-Products connectors to hook everything up.

Tools needed:  Phillips screwdriver, panel tool, flat-blade screwdriver, T15 Torx driver

subaru wrx rear door speaker

A rear door speaker (Crutchfield Research Photo)

Rear speakers

The rear door holds a 5" speaker in a plastic bracket, and it's not difficult to get the door panel off. You can install an aftermarket 4" or 5" speaker in this location using the factory mounting bracket. A harness is available.

Tools needed: Phillips screwdriver, small flat-blade screwdriver, panel tool

Shop for speakers that fit your Subaru Impreza WRX

Bass in your WRX

subaru wrx factory subwoofer

The Subaru's factory subwoofer (Crutchfield Research Photo)

Some 2002-04 WRX models were equipped with a factory subwoofer housed in a rectangular enclosure beneath the driver’s seat. When you replace the stereo, you can keep this sub working by connecting the turn-on lead in the Crutchfield-supplied harness to your new car stereo. There’s currently no way to replace the sub in the factory enclosure, but a smaller, powered subwoofer like the Sound Ordnance B-8PTD should fit into the space nicely.

Shop for vehicle-specific subwoofers for your Subaru Impreza WRX

More Options

Here are some other suggestions for your WRX:

iPod® and satellite radio adapters

If you don't want to replace the factory receiver, you can still add versatility and great sound to the system. We offer several adapters that will allow you to use an iPod, MP3 player, or satellite radio with the factory system.

Security systems

Installing a security system in your WRX isn't easy (security systems rarely are), but it's definitely a good idea. Our Crutchfield Advisors can help figure out what you need to get the job done, but we usually recommend taking your car and new gear to a professional installer.

Good, Better, Best

Good: The stock Subaru speakers aren't awful, so replace your factory radio first. The extra power will make your system sound better, and you can select a stereo with Bluetooth® connectivitiy, iPod® controls, and other modern touches.

Better: Next, replace your front door speakers and tweeters with some decent component speakers. Because of the cramped space, your selection of speakers is somewhat limited, at least when it comes to speakers that will drop right in. With a little ingenuity though, you can get some nice speakers in there. Consider powering the front components with an amp to overcome the road noise that a Subaru generates a higher speeds.

Best: Add a sub. You'll be glad you did.

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