Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

2003 Subaru Forester

Change vehicle | Remove vehicle

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 2003 Subaru Forester

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

Filters
Install Bay ✕
Clear Filters
Reset Done
Brands
Install Bay,
You Recently Chose:
Atrend (141)
Massive Audio (57)
PAC (35)
NVX (961)
Kicker (488)
DS18 (480)
JL Audio (480)
Rockford Fosgate (451)
Stinger (435)
Cerwin-Vega (331)
Wet Sounds (229)
Sundown Audio (220)
Belva (193)
Diamond Audio (182)
Alpine (181)
Install Bay (176)
Metra (163)
MTX (140)
Heise (110)
American Bass (105)
Deaf Bonce (102)
T-Spec (96)
Hertz (86)
JBL (83)
AudioControl (82)
Kenwood (79)
DC Audio (78)
Crux (69)
XS Power (67)
Tru Spec (66)
MB Quart (61)
Hifonics (55)
BOYO Vision (52)
Infinity (48)
Axxess (47)
Pioneer (46)
Earthquake Sound (43)
Viper (42)
Crunch (40)
SSV Works (33)
Shuriken (33)
Sound Extreme (32)
Race Sport Accessories (28)
Polk Audio (27)
Steve Meade Designs (27)
Boss (26)
Crimestopper (26)
Directed (25)
Avital (23)
PRV Audio (23)
Cobra (21)
Prestige (21)
Dynamat (20)
Bazooka (19)
Limitless Lithium (19)
Boom Mat (18)
AmmoTenna (14)
SPL-LAB (13)
Autotek (12)
Fusion (12)
Orion (12)
Saddle Tramp (12)
Second Skin Audio (12)
Energie (11)
Escort (11)
Ballistic (10)
Jensen (10)
Memphis (10)
Clarion (8)
Precision Power (8)
JVC (7)
Omega (7)
Python (7)
American International (6)
Beat-Sonic (6)
Dronemobile (6)
Dual (6)
Encore (6)
Scosche (6)
Soundstream (6)
FlashLogic (4)
Kleinn (4)
Thinkware (4)
Excalibur (3)
GROM Audio (3)
Power Acoustik (3)
TruConnex (3)
XpressKit (3)
iDataLink (3)
Audiovox (2)
Bavsound (2)
Clifford (2)
NAV-TV (2)
Planet Audio (2)
Sony (2)
StreetWires (2)
Vinland (2)
BlackVue (1)
Carwires (1)
Echomaster (1)
Fortin (1)
HELLA (1)
House Brand (1)
Momento (1)
PowerBass (1)
Raptor (1)
Reikken (1)
ScyTek (1)
Select Increments (1)
VIBE (1)

We are sorry, no available results!

Product Type
Price Range
Product Fitment Type
Availability
filter-icon Filters & Sort

Install Bay SR6

MDF 1/2" Spacer Rings for 6" Speakers (Pair)

SR6 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay SR6

MDF 1/2" Spacer Rings for 6" Speakers (Pair)

• MDF Speaker Rings
• 6" x 1/2"
• Perfect for Speaker Spacers or Custom Fiberglass Installations

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

11
List price $16.99
-12% $14.99

Available

Ships in 10-14 days

Add to Cart

• MDF Speaker Rings
• 6" x 1/2"
• Perfect for Speaker Spacers or Custom Fiberglass Installations

Install Bay FLX14BLK

1/4" Expandable Sleeving, Black - 200 Feet

FLX14BLK big
Go to item page Right Arrow Icon of Right Arrow

Install Bay FLX14BLK

1/4" Expandable Sleeving, Black - 200 Feet

• 1/4" split-braid sleeving
• Protects wires, cables, hoses and more
• Great for automotive, marine or office applications
• 200 feet of tubing included
• Resists cuts and other abrasions

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $9.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $104.99
-10% $93.99

In stock

Only 3 Left!

Add to Cart

• 1/4" split-braid sleeving
• Protects wires, cables, hoses and more
• Great for automotive, marine or office applications
• 200 feet of tubing included
• Resists cuts and other abrasions

NVX - Worth the Envy - Direct to Consumer Car Audio

Install Bay F6N025BK

1/4in Self-Wrapping Split Braid Sleeving Black - 100FT

F6N025BK big
Go to item page Right Arrow Icon of Right Arrow

Install Bay F6N025BK

1/4in Self-Wrapping Split Braid Sleeving Black - 100FT

• 1/4in size plus 25 percent edge overlap
• 100Ft Box Dispenser
• Semi-rigid braid design simply closes around the entire installation
• Cut and abrasion resistant

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $12.20 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $135.99
-10% $121.99

In stock

Only 3 Left!

Add to Cart

• 1/4in size plus 25 percent edge overlap
• 100Ft Box Dispenser
• Semi-rigid braid design simply closes around the entire installation
• Cut and abrasion resistant

Install Bay FLX18BLK

1/8in Expandable Sleeving, Black - 250 Feet

FLX18BLK big
Go to item page Right Arrow Icon of Right Arrow

Install Bay FLX18BLK

1/8in Expandable Sleeving, Black - 250 Feet

• 1/8" split-braid sleeving
• Protects wires, cables, hoses and more
• Great for automotive, marine or office applications
• 250 feet of tubing included
• Resists cuts and other abrasions

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $12.30 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $136.99
-10% $122.99

In stock

Only 2 Left!

Add to Cart

• 1/8" split-braid sleeving
• Protects wires, cables, hoses and more
• Great for automotive, marine or office applications
• 250 feet of tubing included
• Resists cuts and other abrasions

Install Bay 3MHS34

3M 10 Pack 3/4" Diameter Heat Shrink Tubing

3MHS34 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MHS34

3M 10 Pack 3/4" Diameter Heat Shrink Tubing

• 3/4 inch
• refill package
• heat shrink < /br>

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$17.99

Available

Ships in 10-14 days

Add to Cart

• 3/4 inch
• refill package
• heat shrink < /br>

Install Bay BNFD250F

Red Nylon 16/148 Gauge 0.250 Fully Insulated Nylon Female Quick Disconnect

BNFD250F big
Go to item page Right Arrow Icon of Right Arrow

Install Bay BNFD250F

Red Nylon 16/148 Gauge 0.250 Fully Insulated Nylon Female Quick Disconnect

• Blue nylon female quick disconnect terminals
• Connects to male terminals with 0.250 size
• Accepts 16/14 AWG gauge wire
• Package of 100 pieces

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $15.99
-13% $13.99

In stock

Only 2 Left!

Add to Cart

• Blue nylon female quick disconnect terminals
• Connects to male terminals with 0.250 size
• Accepts 16/14 AWG gauge wire
• Package of 100 pieces

The InstallBay AK4ANL

4 Gauge Complete Amplifier Installation Kit with RCA Interconnect Cables & ANL Fuse Holder

AK4ANL big
Go to item page Right Arrow Icon of Right Arrow

The InstallBay AK4ANL

4 Gauge Complete Amplifier Installation Kit with RCA Interconnect Cables & ANL Fuse Holder

• Complete 4 Gauge Amplifier Installation Kit with RCA Interconnect Cables
• Perfect for 1800 Watts Amplifier Setup
• 17ft. Blue Power Cable
• 3ft. Black Ground Cable
• 17ft. Blue RCA Cable

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

30
List price $68.99
-10% $61.99

In stock

Only 3 Left!

Add to Cart
Continue to cart
Available Offers (2) for The InstallBay AK4ANL
15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
Select your other item
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.
Select your other item

The Install Bay SB175

1/0 AWG High Current Power and Ground Quick Disconnect

SB175 big
Go to item page Right Arrow Icon of Right Arrow

The Install Bay SB175

1/0 AWG High Current Power and Ground Quick Disconnect

• 1/0 AWG Power and Ground Quick Disconnect
• Color Is Yellow
• Makes It Easy To Remove Amps, Batteries And Other Equipment Quickly
• Requires 2 Pieces To Create Connection

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $38.99
-10% $34.99

In stock

Add to Cart

• 1/0 AWG Power and Ground Quick Disconnect
• Color Is Yellow
• Makes It Easy To Remove Amps, Batteries And Other Equipment Quickly
• Requires 2 Pieces To Create Connection

Install Bay F6N050BK

1/2" Self-Wrapping Split Braid Sleeving, Black - 75FT

F6N050BK big
Go to item page Right Arrow Icon of Right Arrow

Install Bay F6N050BK

1/2" Self-Wrapping Split Braid Sleeving, Black - 75FT

• 1/2" split-braid sleeving
• Protects wires, cables, hoses and more
• Protects against salt water, solvents, automotive chemicals and more
• More flexible than plastic
• Resists cuts and other abrasions

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $152.99
-10% $136.99

Available

Ships in 10-14 days

Add to Cart

• 1/2" split-braid sleeving
• Protects wires, cables, hoses and more
• Protects against salt water, solvents, automotive chemicals and more
• More flexible than plastic
• Resists cuts and other abrasions

Install Bay ATMDT-1

Add-a-Fuse Dual Mini ATM Fuse Tap Kit - 1 PC

ATMDT-1 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay ATMDT-1

Add-a-Fuse Dual Mini ATM Fuse Tap Kit - 1 PC

• Dual Mini ATM Fuse Tap Kit
• Add a Fuse

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $12.99
-15% $10.99

In stock

Add to Cart

• Dual Mini ATM Fuse Tap Kit
• Add a Fuse

Install Bay 3MBNMD250F

3M Blue 16/14 Gauge 0.250" Fully Insulated Nylon Male Quick Disconnect

3MBNMD250F big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MBNMD250F

3M Blue 16/14 Gauge 0.250" Fully Insulated Nylon Male Quick Disconnect

• Male Quick Disconnects
• Accepts 16/14 gauge wire
• Nylon fully insulated
• Comes in pack of 100
• Connector Size: 0.250"
• Color: Blue

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $27.99
-11% $24.99

In stock

Only 2 Left!

Add to Cart

• Male Quick Disconnects
• Accepts 16/14 gauge wire
• Nylon fully insulated
• Comes in pack of 100
• Connector Size: 0.250"
• Color: Blue

Install Bay IBR65

Bluetooth Audio Receiver Flush Mount

IBR65 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay IBR65

Bluetooth Audio Receiver Flush Mount

• Bluetooth Audio Receiver Mount
• 3.5mm auxiliary input
• Independent volume and track controls

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $14.80 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $164.99
-10% $147.99

In stock

Only 3 Left!

Add to Cart

• Bluetooth Audio Receiver Mount
• 3.5mm auxiliary input
• Independent volume and track controls

The Install Bay IB200

200 Amp Battery Isolator and Relay

IB200 big
Go to item page Right Arrow Icon of Right Arrow

The Install Bay IB200

200 Amp Battery Isolator and Relay

• Battery Isolator and Relay
• 200 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $11.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

14
List price $126.99
-10% $113.99

In stock

Only 2 Left!

Add to Cart

• Battery Isolator and Relay
• 200 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

Install Bay 3MHST38

3M Heat Shrink 3/8" Diameter Tubing Black

3MHST38 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MHST38

3M Heat Shrink 3/8" Diameter Tubing Black

• 3/8 inch heat shrink tubing
• Made with polyoefin (black)
• Length: 4 feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $9.99
-10% $8.99

In stock

Add to Cart

• 3/8 inch heat shrink tubing
• Made with polyoefin (black)
• Length: 4 feet

Install Bay 3MBNFD250F

3M Blue 16/14 Gauge 0.250" Fully Insulated Nylon Female Quick Disconnect

3MBNFD250F big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MBNFD250F

3M Blue 16/14 Gauge 0.250" Fully Insulated Nylon Female Quick Disconnect

• Female Quick Disconnects
• Accepts 16/14 gauge wire
• Nylon fully insulated
• Comes in pack of 100
• Connector Size: 0.250"
• Color: Blue

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $31.99
-13% $27.99

In stock

Only 1 Left!

Add to Cart

• Female Quick Disconnects
• Accepts 16/14 gauge wire
• Nylon fully insulated
• Comes in pack of 100
• Connector Size: 0.250"
• Color: Blue

Install Bay 3MHS316

3M Heat Shrink 3/16" Diameter Tubing 10 Pack

3MHS316 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MHS316

3M Heat Shrink 3/16" Diameter Tubing 10 Pack

• 3/16 inch
• Refill pack of heat shrink
• Pack of 10 < /br>

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$7.99

Available

Ships in 10-14 days

Add to Cart

• 3/16 inch
• Refill pack of heat shrink
• Pack of 10 < /br>

Install Bay 3MHST14

3M Heat Shrink 1/4" Diameter Tubing Black

3MHST14 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MHST14

3M Heat Shrink 1/4" Diameter Tubing Black

• 1/4 inch heat shrink tubing
• Made with Polyoefin (black)
• Length: 4 feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $8.99
-11% $7.99

Available

Ships in 10-14 days

Add to Cart

• 1/4 inch heat shrink tubing
• Made with Polyoefin (black)
• Length: 4 feet

Install Bay 3MRNFD250F

3M Red 22/18 Gauge 0.250 Fully Insulated Nylon Female Quick Disconnect

3MRNFD250F big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MRNFD250F

3M Red 22/18 Gauge 0.250 Fully Insulated Nylon Female Quick Disconnect

• Female Quick Disconnects
• Accepts 22/18 gauge wire
• Nylon fully insulated
• Comes in pack of 100
• Connector Size: 0.250"
• Color: Red

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $31.99
-13% $27.99

In stock

Only 2 Left!

Add to Cart

• Female Quick Disconnects
• Accepts 22/18 gauge wire
• Nylon fully insulated
• Comes in pack of 100
• Connector Size: 0.250"
• Color: Red

Install Bay FMX-40

40 Amp USA Cooper Bussman FMX Fuse

FMX-40 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Install Bay FMX-40

40 Amp USA Cooper Bussman FMX Fuse

• USA Cooper Bussman FMX Fuse
• Universal application
• Fuse Size: 40 amp
• See-Through Windows
• High-Temperature Plastic Casings
• Circuit Protection
• High Conductivity

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $9.99
-10% $8.99
Add to Cart

• USA Cooper Bussman FMX Fuse
• Universal application
• Fuse Size: 40 amp
• See-Through Windows
• High-Temperature Plastic Casings
• Circuit Protection
• High Conductivity

Install Bay IB5KR

5000 Ohm Load Resistors (Pack of 100)

IB5KR big
Go to item page Right Arrow Icon of Right Arrow

Install Bay IB5KR

5000 Ohm Load Resistors (Pack of 100)

• 5000 ohms / 0.05 watts / 5 percent load resistors
• Pack of 100

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $4.99
-20% $3.99

In stock

Only 1 Left!

Add to Cart

• 5000 ohms / 0.05 watts / 5 percent load resistors
• Pack of 100

NVX - Worth the Envy - Direct to Consumer Car Audio
Prev 3 4 5 6 7 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 2003 Forester

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2003 Subaru Forester?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your Forester.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2003 Subaru Forester

    2019 Nissan Leaf

    1984 Porsche 944

    2013 Ford Transit Connect

    2007 Ford Crown Victoria

    1996 BMW 740iL

    2012 Acura TSX

    2021 MINI Cooper

    1977 Saab 99

    2015 Honda Civic

    Vehicle
    Store     Delete

    2005 Harley Davidson FLTR Road Glide

    2006 Harley Davidson FXSTS/I Springer Softail

    1950 Harley Davidson EL

    Vehicle
    Store     Delete

    2015 Can-Am Commander E XT

    2017 Can-Am Defender MAX HD10 DPS

    2015 Can-Am Commander Max 1000 DPS

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2003 Forester
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo