Garage
Shop

2003 Audi RS6

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.

Universal-Fit Audio for 2003 Audi RS6

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.

Loading...
Filters
You Recently Chose:

We are sorry, no available results!

filter-icon Filters & Sort

Stinger SSGA48

Stinger Select 4 to 8 Ga Set Screw Gauge Adapter

SSGA48 big
Go to item page Right Arrow Icon of Right Arrow

Stinger Select 4 to 8 Ga Set Screw Gauge Adapter

• Brass Construction
• 4 GA to 8 GA
• Nickel Plated Finish
• Large Set Screws

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
List price $9.00
-11% $7.99

Available

Ships in 10-14 days

• Brass Construction
• 4 GA to 8 GA
• Nickel Plated Finish
• Large Set Screws

NVX VCW152v3RC

Recone Kit for VCW152v3 Version 3 Subwoofers

VCW152v3RC big
Go to item page Right Arrow Icon of Right Arrow

Recone Kit for VCW152v3 Version 3 Subwoofers

• Kits are assembled to ensure perfect fitment and alignment
• Each kit includes all new soft moving parts
• Impedance: Dual 2-ohm
• CA glue adhesive is NOT included

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $131.99
-17% $109.99

In stock

Only 3 Left!

• Kits are assembled to ensure perfect fitment and alignment
• Each kit includes all new soft moving parts
• Impedance: Dual 2-ohm
• CA glue adhesive is NOT included

PAC LP7-2

2-Channel LocPRO Series Line Output Converter with Remote Turn-On

LP7-2 big
Go to item page Right Arrow Icon of Right Arrow

2-Channel LocPRO Series Line Output Converter with Remote Turn-On

• 2-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

18
List price $59.00
-49% $29.99

In stock

• 2-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

Limited time!

NVX VCW122 Version 3 (VCW122v3)

2400W Peak (1200W RMS) 12" VC-Series v3 Dual 2-ohm Car Subwoofer

VCW122v3 big
Go to item page Right Arrow Icon of Right Arrow

2400W Peak (1200W RMS) 12" VC-Series v3 Dual 2-ohm Car Subwoofer

• Peak Power: 2400 watts
• RMS Power: 1200 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 7.02"
• Sensitivity: 85 dB (1W/1m)

Dads & Grads Sale! Save 15% at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

94
List price $287.99
-17% $239.99

In stock

Sound Extreme by ECOXGEAR SEI-SEWHP4

4 ft. Extreme LEDCast Lighting Whip and Controller

SEI-SEWHP4 big
Go to item page Right Arrow Icon of Right Arrow

4 ft. Extreme LEDCast Lighting Whip and Controller

• Extreme LEDCast Lighting Whip Kit with Controller
• Long range RF remote, and smartphone BLE app
• Create custom lighting presets
• IP66-rated for dirt and moisture resistance
• Optional light control to vehicle's brake, reverse and turn signals

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Universal Icon
Universal – fits most vehicles.
Shop similar products or Update vehicle
$149.99

Available

Ships in 10-14 days

• Extreme LEDCast Lighting Whip Kit with Controller
• Long range RF remote, and smartphone BLE app
• Create custom lighting presets
• IP66-rated for dirt and moisture resistance
• Optional light control to vehicle's brake, reverse and turn signals

JL Audio 10TW3-D4

400W RMS 10" TW3 Series Dual 4-ohm Shallow Subwoofer

10TW3-D4 big
Go to item page Right Arrow Icon of Right Arrow

400W RMS 10" TW3 Series Dual 4-ohm Shallow Subwoofer

• RMS Power: 400 watts
• Polymer/Mica Composite Cone
• Rubber Surround
• Impedance: Dual 4 ohm
• Mount depth: 3.25"
• Sensitivity: 82.10 dB

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

VIP Product Get $52.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

29
$519.99

In stock

Used from: $441.99

Kicker CXARC (46CXARCT)

Wired Bass Remote Controller for CX Series Amplifiers

46CXARCT big
Go to item page Right Arrow Icon of Right Arrow

Wired Bass Remote Controller for CX Series Amplifiers

• Wired bass remote controller for Kicker CX series amplifiers
• Works with DX or PX series amplifiers with remote bass jack
• Includes 19.5 ft. cable and mounting accessories

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

16
$39.99

In stock

• Wired bass remote controller for Kicker CX series amplifiers
• Works with DX or PX series amplifiers with remote bass jack
• Includes 19.5 ft. cable and mounting accessories

Pioneer ADT-VA133 Dash Kit

Install a new Double-DIN car stereo (Black)

ADT-VA133 big
Go to item page Right Arrow Icon of Right Arrow

Install a new Double-DIN car stereo (Black)

• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

13
List price $60.00
-25% $44.99

In stock

Only 3 Left!

• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions

Rockford Fosgate PP4-X

250W Peak (125W RMS) 4-Ohm Passive Crossover

PP4-X big
Go to item page Right Arrow Icon of Right Arrow

250W Peak (125W RMS) 4-Ohm Passive Crossover

• Passive Crossover
• 250W Max and 125W RMS
• Dual Woofer Outputs
• Includes Mounting Hardware
• Designed for Punch Pro Midrange Drivers and Tweeters

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

VIP Product Get $10.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$99.99

In stock

• Passive Crossover
• 250W Max and 125W RMS
• Dual Woofer Outputs
• Includes Mounting Hardware
• Designed for Punch Pro Midrange Drivers and Tweeters

Stinger SGP90250

High Power 250Amp Circuit Breaker w/ Built-In Distribution

SGP90250 big
Go to item page Right Arrow Icon of Right Arrow

High Power 250Amp Circuit Breaker w/ Built-In Distribution

• Stinger Select Circuit Breaker
• Power Rating: 250 Amps
• Push Button Reset
• Water Resistant Housing
• Integrated Holes for Simple Mounting
• Compact and Lightweight Design

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 $139.00
-53% $65.99

In stock

• Stinger Select Circuit Breaker
• Power Rating: 250 Amps
• Push Button Reset
• Water Resistant Housing
• Integrated Holes for Simple Mounting
• Compact and Lightweight Design

Limited time!

Rockford Fosgate RFC10HB 10 Farad Hybrid Capacitor

Hybrid Digital Stiffening Capacitor and Distribution Block

RFC10HB big
Go to item page Right Arrow Icon of Right Arrow

Hybrid Digital Stiffening Capacitor and Distribution Block

• 10 farad Hybrid Digital Capacitor
• Increases quality of sound
• Increases level of bass
• Platinum plated

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

VIP Product Get $53.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

46
List price $709.99
Save $180.00
-25% $529.99

In stock

• 10 farad Hybrid Digital Capacitor
• Increases quality of sound
• Increases level of bass
• Platinum plated

JBL JBLSUBBPACCKITAM

BassPro Go Vehicle Installation Kit

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

BassPro Go Vehicle Installation Kit

• BassPro Go Vehicle Installation Kit
• Designed for installing a JBL BassPro Go powered subwoofer in another vehicle
• Vehicle mounting bracket, hardware and harnesses included

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 $139.95
-21% $109.95

In stock

• BassPro Go Vehicle Installation Kit
• Designed for installing a JBL BassPro Go powered subwoofer in another vehicle
• Vehicle mounting bracket, hardware and harnesses included

Limited time!

Kenwood DRV-A610WDP

LCD Compact 4K HD Front and Rear Dashboard Camera Package with Wi-Fi and GPS

DRV-A610WDP big
Go to item page Right Arrow Icon of Right Arrow

LCD Compact 4K HD Front and Rear Dashboard Camera Package with Wi-Fi and GPS

• 8.3 Megapixel Recording (front cam)
• 3.7 Megapixel Recording (rear cam)
• 3.0" LCD Display (front cam only)
• Integrated GPS system
• Touch panel control

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 $380.00
Save $101.00
-27% $279.00

In stock

Only 2 Left!

• 8.3 Megapixel Recording (front cam)
• 3.7 Megapixel Recording (rear cam)
• 3.0" LCD Display (front cam only)
• Integrated GPS system
• Touch panel control

NVX XW0GR10

10 ft 1/0-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (Gray)

XW0GR10 big
Go to item page Right Arrow Icon of Right Arrow

10 ft 1/0-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (Gray)

• 10 feet 1/0 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Gray

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 $89.99
-33% $59.99

In stock

• 10 feet 1/0 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Gray

Crimestopper SP-302

2-Way Keyless Entry Car Alarm System with (1) 3000 ft Range 5-Button LCD Transmitter

SP-302 big
Go to item page Right Arrow Icon of Right Arrow

2-Way Keyless Entry Car Alarm System with (1) 3000 ft Range 5-Button LCD Transmitter

• 2-Way Paging Remote Car Starter
• 5-Button LCD Transmitter
• 3000 feet of range (0.56 miles)
• Full high speed 2-way data to data

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

VIP Product Get $10.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

6
List price $199.95
-50% $99.99

In stock

• 2-Way Paging Remote Car Starter
• 5-Button LCD Transmitter
• 3000 feet of range (0.56 miles)
• Full high speed 2-way data to data

Belva BAAUXUSB

USB and AUX Car Audio Adapter

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

USB and AUX Car Audio Adapter

• USB/AUX input
• 6-foot cable
• front-mounted USB-A port and 3.5mm aux input
• 1" mounting hole required
•Easy screw in style installation

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 $14.99
-47% $7.99

In stock

• USB/AUX input
• 6-foot cable
• front-mounted USB-A port and 3.5mm aux input
• 1" mounting hole required
•Easy screw in style installation

Directed 524CL

524CL Cable Lock Bracket Kit (DEI 524CL)

524CL big
Go to item page Right Arrow Icon of Right Arrow

524CL Cable Lock Bracket Kit (DEI 524CL)

• Allows aftermarket actuators to work with cable door lock systems
• Each kit operates two doors
• Does not include actuators
• Includes module, wiring harness and installation guide

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 $32.99
-55% $14.99

In stock

Only 2 Left!

• Allows aftermarket actuators to work with cable door lock systems
• Each kit operates two doors
• Does not include actuators
• Includes module, wiring harness and installation guide

Axxess AX-TRIG1

Universal Parking Brake Bypass Module for Aftermarket Stereos

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

Universal Parking Brake Bypass Module for Aftermarket Stereos

• Universal Parking Brake Bypass Module
• Designed for use in RVs, off-road, and exhibition vehicles
• Emulates a parking brake signal

shipping truck icon Free shipping in USA. Provide zip for delivery date.
17
List price $24.99
-12% $21.99

In stock

• Universal Parking Brake Bypass Module
• Designed for use in RVs, off-road, and exhibition vehicles
• Emulates a parking brake signal

Deaf Bonce Apocalypse ATOM-900.2 PRO

900W RMS Class D Apocalypse Atom Pro Series 2-Channel Full Range Car Amplifier

ATOM-900.2 PRO big
Go to item page Right Arrow Icon of Right Arrow

900W RMS Class D Apocalypse Atom Pro Series 2-Channel Full Range Car Amplifier

• 350 watts x 2 channel @ 4 ohm
• 510 watts x 2 channel @ 2 ohm
• 900 watts x 2 channel @ 1 ohm
• Bridged: 1020 watts x 1 channel @ 4 ohm
• 1000 watts @ 2 ohm
• Total RMS Power: 900 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

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

VIP Product Get $22.99 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$229.90

In stock

Limited time!

JL Audio JD400/4

400W RMS Class D JD Series 4 Channel Car Amplifier

JD400/4 big
Go to item page Right Arrow Icon of Right Arrow

400W RMS Class D JD Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $30.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

34
$299.99

In stock


Available Deal
JD400/4 main
Offer may end without notice

Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT44

$119.99

$83.99

$36 Savings!

Add to cart

Used from: $254.99

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 RS6

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2003 Audi RS6?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your RS6.

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

    2003 Audi RS6

    1992 BMW 850i

    2011 Buick Enclave

    1980 Jeep J10

    2017 Lincoln MKC

    2005 Cadillac DeVille

    2015 GMC Yukon

    1991 Jaguar XJS

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

    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.