Garage
Shop

PAC Car Stereo Installation & Accessories for your 2003 A6

Your Vehicle


Checkmark Icon
2003 A6
Product results for your vehicle – confirm details to verify fitment.

Update vehicle | Remove vehicle | Vehicle store

Top sellers

Loading...
Filters
filter-icon Filters & Sort

PAC GMK460

Single DIN or Double DIN Stereo Dash Kit for select 2016-2021 Malibu

GMK460 big
Go to item page Right Arrow Icon of Right Arrow

Single DIN or Double DIN Stereo Dash Kit for select 2016-2021 Malibu

• Single & Double DIN Install Dash Kit
• Compatible with select 2016-2021 Malibu Vehicles
• Accommodates ISO Single & Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction
• Factory Style Texture
• Modification to existing sub-dash required

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

VIP Product Get $6.00 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $69.00
-13% $59.99

In stock

Only 3 Left!

• Single & Double DIN Install Dash Kit
• Compatible with select 2016-2021 Malibu Vehicles
• Accommodates ISO Single & Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction
• Factory Style Texture
• Modification to existing sub-dash required

PAC RadioPro RP4-NI11

RadioPro Radio Replacement Interface w/ Steering Wheel Control Retention for select 2013-2017 Altima and Rogue and Murano

RP4-NI11 big
Go to item page Right Arrow Icon of Right Arrow

RadioPro Radio Replacement Interface w/ Steering Wheel Control Retention for select 2013-2017 Altima and Rogue and Murano

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Micro-B USB Updatable
• Built-in ASWC-1

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

VIP Product Get $17.60 in rewards to spend later

No Fit Icon Doesn't fit your A6

2
List price $379.00
-54% $175.99

In stock

Only 1 Left!

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Micro-B USB Updatable
• Built-in ASWC-1

PAC TY1A-RS

RadioPRO Advanced Interface for select 2003-2019 vehicles from Toyota, Scion, Lexus with SWC, with or without amplified audio systems

TY1A-RS big
Go to item page Right Arrow Icon of Right Arrow

RadioPRO Advanced Interface for select 2003-2019 vehicles from Toyota, Scion, Lexus with SWC, with or without amplified audio systems

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Micro-B USB Updatable
• Pre-programmed to retain Steering Wheel Controls
• Color coded wires for easy installation
• No cutting or splicing required

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

VIP Product Get $25.90 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $349.00
-26% $259.00

In stock

Only 2 Left!

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Micro-B USB Updatable
• Pre-programmed to retain Steering Wheel Controls
• Color coded wires for easy installation
• No cutting or splicing required

PAC HO6

Install a New Car Stereo and Retain the Factory Antenna in select 2003-2016 vehicles from Honda, Mazda, Acura

HO6 big
Go to item page Right Arrow Icon of Right Arrow

Install a New Car Stereo and Retain the Factory Antenna in select 2003-2016 vehicles from Honda, Mazda, Acura

• Antenna adapter for aftermarket stereos
• Compatible with select 2003-2016 vehicles from Honda, Mazda, Acura
• Retains the factory antenna
• Plugs into the factory harness

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

No Fit Icon Doesn't fit your A6

List price $24.00
-71% $7.00

In stock

• Antenna adapter for aftermarket stereos
• Compatible with select 2003-2016 vehicles from Honda, Mazda, Acura
• Retains the factory antenna
• Plugs into the factory harness

PAC EU08

Connect Factory Antenna to a New Aftermarket Stereo for select 2000-2025 vehicles from Volkswagen, Chevrolet, Audi

EU08 big
Go to item page Right Arrow Icon of Right Arrow

Connect Factory Antenna to a New Aftermarket Stereo for select 2000-2025 vehicles from Volkswagen, Chevrolet, Audi

• Wiring harness to install a new stereo
• Compatible with select 2000-2025 vehicles from Volkswagen, Chevrolet, Audi
• Retains the factory antenna
• Plugs into the factory harness

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

No Fit Icon Doesn't fit your A6

List price $24.00
-17% $20.00

In stock

• Wiring harness to install a new stereo
• Compatible with select 2000-2025 vehicles from Volkswagen, Chevrolet, Audi
• Retains the factory antenna
• Plugs into the factory harness

PAC UN14

Retains Your Factory Antenna With a 12″ Female-to-Female Connection

UN14 big
Go to item page Right Arrow Icon of Right Arrow

Retains Your Factory Antenna With a 12″ Female-to-Female Connection

• Universal 12" female-to-female antenna adapter
• Maintains full AM/FM
• Plugs directly into factory antenna harness

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 $24.00
-63% $9.00

In stock

Only 1 Left!

• Universal 12" female-to-female antenna adapter
• Maintains full AM/FM
• Plugs directly into factory antenna harness

PAC TTR998

Single DIN or Double DIN Stereo Dash Kit for select 2000-2017 vehicles from Toyota, Subaru, Scion

TTR998 big
Go to item page Right Arrow Icon of Right Arrow

Single DIN or Double DIN Stereo Dash Kit for select 2000-2017 vehicles from Toyota, Subaru, Scion

• Single & Double DIN Install Dash Kit and Harness
• Compatible with select 2000-2017 vehicles from Toyota, Subaru, Scion Vehicles
• Factory radio brackets required
• Accommodates ISO Single & Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction

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

No Fit Icon Doesn't fit your A6

List price $39.00
-18% $32.00

In stock

Only 3 Left!

• Single & Double DIN Install Dash Kit and Harness
• Compatible with select 2000-2017 vehicles from Toyota, Subaru, Scion Vehicles
• Factory radio brackets required
• Accommodates ISO Single & Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction

PAC HO11

FM Modulator Antenna Adapter for select 2009-2018 vehicles from Honda

HO11 big
Go to item page Right Arrow Icon of Right Arrow

FM Modulator Antenna Adapter for select 2009-2018 vehicles from Honda

• FM modulator Integration for select 2009-2018 vehicles from Honda
• Plug-and-play, no cutting or splicing required

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

No Fit Icon Doesn't fit your A6

List price $49.00
-24% $37.00

In stock

Only 2 Left!

• FM modulator Integration for select 2009-2018 vehicles from Honda
• Plug-and-play, no cutting or splicing required

PAC RadioPro RP5-GM32

Radio Replacement Interface For select 2012-2014 vehicles from GMC, Chevrolet, OnStar Retention, Steering Wheel Control Retention and Navigation Output

RP5-GM32 big
Go to item page Right Arrow Icon of Right Arrow

Radio Replacement Interface For select 2012-2014 vehicles from GMC, Chevrolet, OnStar Retention, Steering Wheel Control Retention and Navigation Output

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Retains the Bluetooth
• Micro-B USB Updatable

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

No Fit Icon Doesn't fit your A6

List price $459.00
-58% $192.99

In stock

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Retains the Bluetooth
• Micro-B USB Updatable

PAC FD1A-RSX Wiring Interface

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2005-2016 vehicles from Ford, Lincoln, Mercury

FD1A-RSX big
Go to item page Right Arrow Icon of Right Arrow

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2005-2016 vehicles from Ford, Lincoln, Mercury

• Direct connection to the factory harness
• Compatible with select 2005-2016 vehicles from Ford, Lincoln, Mercury
• Retains SWC, RSE, RSC, and THX or Sony amplifier
• Color coded wires for easy installation
• No cutting or splicing required

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

VIP Product Get $25.90 in rewards to spend later

No Fit Icon Doesn't fit your A6

3
List price $299.99
-14% $259.00

In stock

• Direct connection to the factory harness
• Compatible with select 2005-2016 vehicles from Ford, Lincoln, Mercury
• Retains SWC, RSE, RSC, and THX or Sony amplifier
• Color coded wires for easy installation
• No cutting or splicing required

PAC CDK639B

Double DIN Stereo Dash Kit for select 2005-2007 Magnum and Charger (Black)

CDK639B big
Go to item page Right Arrow Icon of Right Arrow

Double DIN Stereo Dash Kit for select 2005-2007 Magnum and Charger (Black)

• Double DIN Install Dash Kit
• Compatible with select 2005-2007 Magnum and Charger Vehicles
• Accommodates ISO Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction
• Factory Style Texture in Satin Black

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

No Fit Icon Doesn't fit your A6

List price $149.00
-46% $79.99

In stock

Only 2 Left!

• Double DIN Install Dash Kit
• Compatible with select 2005-2007 Magnum and Charger Vehicles
• Accommodates ISO Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction
• Factory Style Texture in Satin Black

PAC RPK4-FD2101

Radio Replacement Kit for Select Fords with 8" Display

RPK4-FD2101 big
Go to item page Right Arrow Icon of Right Arrow

Radio Replacement Kit for Select Fords with 8" Display

• Retains steering wheel control functions
• Retains HVAC controls
• Retains factory cameras (including 360 views)

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

VIP Product Get $82.08 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $999.00
-18% $820.80

In stock

Only 1 Left!

• Retains steering wheel control functions
• Retains HVAC controls
• Retains factory cameras (including 360 views)

PAC LCGM52 Wiring Interface

Install a new car stereo and retains the safety warning chimes in select 2016-2019 vehicles from Chevrolet, GMC

LCGM52 big
Go to item page Right Arrow Icon of Right Arrow

Install a new car stereo and retains the safety warning chimes in select 2016-2019 vehicles from Chevrolet, GMC

• Provides 12-Volt accessory power (RAP)
• Color coded wires for easy installation
• No cutting or splicing required
• Micro-B USB Updatable

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

No Fit Icon Doesn't fit your A6

2
List price $129.00
-51% $62.99

In stock

Only 2 Left!

• Provides 12-Volt accessory power (RAP)
• Color coded wires for easy installation
• No cutting or splicing required
• Micro-B USB Updatable

PAC USBCH1

USB Hub Replacement Kit for select 2013-2021 vehicles from Ram, Dodge, Chrysler

USBCH1 big
Go to item page Right Arrow Icon of Right Arrow

USB Hub Replacement Kit for select 2013-2021 vehicles from Ram, Dodge, Chrysler

• USB Hub for select 2013-2021 vehicles from Ram, Dodge, Chrysler
• Designed for aftermarket stereos and OEM integration
• Cables fit in the included vehicle-specific hub plastics
• Easy access to ports for Android Auto and Apple CarPlay

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

VIP Product Get $8.90 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $109.00
-18% $89.00

Available

Ships in 10-14 days

• USB Hub for select 2013-2021 vehicles from Ram, Dodge, Chrysler
• Designed for aftermarket stereos and OEM integration
• Cables fit in the included vehicle-specific hub plastics
• Easy access to ports for Android Auto and Apple CarPlay

PAC HWH810

Install a New Car Stereo in select 2008-2021 vehicles from Honda, Acura

HWH810 big
Go to item page Right Arrow Icon of Right Arrow

Install a New Car Stereo in select 2008-2021 vehicles from Honda, Acura

• Wiring harness to install a new stereo
• Compatible with select 2008-2021 vehicles from Honda, Acura
• Plugs into the factory harness

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

No Fit Icon Doesn't fit your A6

List price $24.00
-63% $9.00

In stock

Only 3 Left!

• Wiring harness to install a new stereo
• Compatible with select 2008-2021 vehicles from Honda, Acura
• Plugs into the factory harness

PAC HO8

Install a New Car Stereo and Retain the Factory Antenna in select 2010-2021 vehicles from Honda

HO8 big
Go to item page Right Arrow Icon of Right Arrow

Install a New Car Stereo and Retain the Factory Antenna in select 2010-2021 vehicles from Honda

• Antenna adapter for aftermarket stereos
• Compatible with select 2010-2021 vehicles from Honda
• Retains the factory antenna
• Plugs into the factory harness

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

No Fit Icon Doesn't fit your A6

List price $24.00
-58% $10.00

In stock

• Antenna adapter for aftermarket stereos
• Compatible with select 2010-2021 vehicles from Honda
• Retains the factory antenna
• Plugs into the factory harness

PAC CDK660

Double DIN Stereo Dash Kit for select 2004-2010 vehicles from Chrysler, Jeep, Dodge

CDK660 big
Go to item page Right Arrow Icon of Right Arrow

Double DIN Stereo Dash Kit for select 2004-2010 vehicles from Chrysler, Jeep, Dodge

• Double DIN Install Dash Kit and Harness
• Compatible with select 2004-2010 vehicles from Chrysler, Jeep, Dodge Vehicles
• For Models without factory navigation
• Accommodates ISO Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction

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

VIP Product Get $5.80 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $59.00
$58.00

In stock

• Double DIN Install Dash Kit and Harness
• Compatible with select 2004-2010 vehicles from Chrysler, Jeep, Dodge Vehicles
• For Models without factory navigation
• Accommodates ISO Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction

PAC CDK637S

Double DIN Stereo Dash Kit for select 2005-2007 300 (Silver)

CDK637S big
Go to item page Right Arrow Icon of Right Arrow

Double DIN Stereo Dash Kit for select 2005-2007 300 (Silver)

• Double DIN Install Dash Kit
• Compatible with select 2005-2007 300 Vehicles
• Accommodates ISO Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction
• Factory Style Texture in Silver

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

VIP Product Get $14.40 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $149.00
$144.00

In stock

Only 3 Left!

• Double DIN Install Dash Kit
• Compatible with select 2005-2007 300 Vehicles
• Accommodates ISO Double DIN Mount
• Painted to Match Factory Dash Color
• High-Grade ABS Plastic Construction
• Factory Style Texture in Silver

PAC CH1A-RSX

Radio Replacement Interface for select 2004-2017 vehicles from Dodge, Jeep, Chrysler

CH1A-RSX big
Go to item page Right Arrow Icon of Right Arrow

Radio Replacement Interface for select 2004-2017 vehicles from Dodge, Jeep, Chrysler

• Provides 12-Volt accessory power (RAP)
• Compatible with amplified models
• Retains factory Bluetooth
• Micro-B USB Updatable

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

VIP Product Get $25.90 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $349.00
-26% $259.00

In stock

• Provides 12-Volt accessory power (RAP)
• Compatible with amplified models
• Retains factory Bluetooth
• Micro-B USB Updatable

RPK4-CH4101 Integrated Installation Kit with Integrated Climate Controls

Vehicles Antenna Adapter Kit for select 2013 1500 and 3500 and 2500

RPK4-CH4101 big
Go to item page Right Arrow Icon of Right Arrow

Vehicles Antenna Adapter Kit for select 2013 1500 and 3500 and 2500

• Factory-matched dash kit
• Complete set of climate control knobs and buttons
• 4 Programmable hard buttons with proximity-sense technology for quick access of cameras and more
• Supports up to 5 driver safety cameras with use of RPA-16P5V, sold separately
• Compatible with select 2013 1500 and 3500 and 2500 Vehicles

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

VIP Product Get $75.24 in rewards to spend later

No Fit Icon Doesn't fit your A6

List price $999.00
-25% $752.40

In stock

Only 2 Left!

• Factory-matched dash kit
• Complete set of climate control knobs and buttons
• 4 Programmable hard buttons with proximity-sense technology for quick access of cameras and more
• Supports up to 5 driver safety cameras with use of RPA-16P5V, sold separately
• Compatible with select 2013 1500 and 3500 and 2500 Vehicles

Items per page: 20

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

    2003 Audi A6

    2025 Chevrolet Trax

    2013 Acura MDX

    1995 GMC C1500

    1993 Isuzu Impulse

    1982 Jeep Wagoneer

    2022 Chevrolet Silverado 2500 HD

    2011 Chrysler 300

    2012 Nissan 370Z

    2013 Nissan Rogue

    Vehicle
    Store
    Delete

    1960 Harley Davidson FLH Electra Glide

    Vehicle
    Store
    Delete

    2015 Can-Am Commander 1000 XT-P

    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.