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Metra 40-EU55

Antenna Adapter for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

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Antenna Adapter for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

• Antenna adapter
• For select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Use for replacing vehicle radio
• Male Motorola connector and power wire on one end
• Male European-style FAKRA on the other end

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Fits your A4
49
List price $22.99
-13% $19.99

In stock

• Antenna adapter
• For select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Use for replacing vehicle radio
• Male Motorola connector and power wire on one end
• Male European-style FAKRA on the other end

Metra 40-VW10 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen

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Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen

• Factory Antenna to Aftermarket Radio Adapter
• Compatible with select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen Vehicles
• Factory antenna with flat plug to aftermarket radio
• A capacitor is included to match the impedance

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22
List price $11.99
-33% $7.99

In stock

• Factory Antenna to Aftermarket Radio Adapter
• Compatible with select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen Vehicles
• Factory antenna with flat plug to aftermarket radio
• A capacitor is included to match the impedance

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PAC SAT-01 Antenna Adapter

Connect your factory SiriusXM antenna to a new aftermarket radio for select 2004-2024 vehicles from Ford, Audi, GMC

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Connect your factory SiriusXM antenna to a new aftermarket radio for select 2004-2024 vehicles from Ford, Audi, GMC

• Retains the Use of the OEM Satellite Antenna with an Aftermarket Satellite Radio Turner
• Plug and Play Installation
• Compatible with Vehicles using a FAKRA Style Antenna Connector

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1
List price $29.00
-45% $15.99

In stock

• Retains the Use of the OEM Satellite Antenna with an Aftermarket Satellite Radio Turner
• Plug and Play Installation
• Compatible with Vehicles using a FAKRA Style Antenna Connector

Metra 99-9107B Dash Kit

Install a new Single-DIN or Double-DIN car stereo in select 2002-2009 S4 and A4 and RS4 (Matte Black)

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Install a new Single-DIN or Double-DIN car stereo in select 2002-2009 S4 and A4 and RS4 (Matte Black)

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

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8
List price $67.99
-59% $27.99

In stock

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

Metra 70-1784

Install a New Car Stereo in select 1980-2020 vehicles from Volkswagen, Audi, Ram

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Install a New Car Stereo in select 1980-2020 vehicles from Volkswagen, Audi, Ram

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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16
$9.99

In stock

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Metra 40-VW53 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen

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Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen

• Aftermarket Radio To Factory Antenna Adapter (Amplified)
• Compatible with select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen Vehicles
• Includes Power Wire For Antenna Booster
• Can Be Used In Place Of 40-VW54

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3
List price $17.99
-28% $12.99

In stock

• Aftermarket Radio To Factory Antenna Adapter (Amplified)
• Compatible with select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen Vehicles
• Includes Power Wire For Antenna Booster
• Can Be Used In Place Of 40-VW54

Scosche VWA4B Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2000-2026 vehicles from Audi, Chevrolet, Ram

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Connect your factory antenna to a new aftermarket radio for select 2000-2026 vehicles from Audi, Chevrolet, Ram

• Audi/BMW/VW Antenna Adaptor
• adapts factory antenna to aftermarket radio
• select 2000-2026 vehicles from Audi, Chevrolet, Ram Vehicles

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11
List price $15.79
-18% $12.99

In stock

• Audi/BMW/VW Antenna Adaptor
• adapts factory antenna to aftermarket radio
• select 2000-2026 vehicles from Audi, Chevrolet, Ram Vehicles

Metra 70-1787 Wiring Harness

Install a new car stereo and retain factory amplifier in select 1996-2005 vehicles from Audi, Porsche

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Install a new car stereo and retain factory amplifier in select 1996-2005 vehicles from Audi, Porsche

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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Fits select models only.
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6
List price $33.99
-47% $17.99

In stock

Only 2 Left!

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

PAC C2R-AUDI Wiring Interface

Install a new car stereo and retain other factory features in select 2004-2010 A4 and TT and A3

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Install a new car stereo and retain other factory features in select 2004-2010 A4 and TT and A3

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Compatible with Bose and symphony systems
• Plug-and-play connection

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List price $299.00
-53% $139.99

In stock

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Compatible with Bose and symphony systems
• Plug-and-play connection

Metra 40-EU66 Antenna Adapter

Connect Aftermarket Antenna to Factory Stereo via European-Style Dual FAKRA Antenna Adapter in select 2005-2025 vehicles from BMW, Audi, Volkswagen

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Connect Aftermarket Antenna to Factory Stereo via European-Style Dual FAKRA Antenna Adapter in select 2005-2025 vehicles from BMW, Audi, Volkswagen

• European-style dual FAKRA antenna adapter
• Compatible with select 2005-2025 vehicles from BMW, Audi, Volkswagen
• Adapts vehicle's factory stereo to use with an aftermarket antenna
• Works with 40-EU56 for installations of FM modulators
• Easy installation, no major modification required

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List price $54.99
-58% $22.99

Available

Ships in 10-14 days

• European-style dual FAKRA antenna adapter
• Compatible with select 2005-2025 vehicles from BMW, Audi, Volkswagen
• Adapts vehicle's factory stereo to use with an aftermarket antenna
• Works with 40-EU56 for installations of FM modulators
• Easy installation, no major modification required

Metra 99-9106 Dash Kit

Install a new Single-DIN car stereo in select 1996-2007 vehicles from Audi

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Install a new Single-DIN car stereo in select 1996-2007 vehicles from Audi

• Single-DIN Dash Kit
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions

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2
List price $94.99
-65% $32.99

In stock

Only 1 Left!

• Single-DIN Dash Kit
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions

Scosche LAI10 Wiring Interface

Install new car stereo and retain steering wheel audio controls in select 2004-2023 vehicles from Audi

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Install new car stereo and retain steering wheel audio controls in select 2004-2023 vehicles from Audi

• Provides 12-Volt accessory power (RAP)
• Retains steering wheel control
• Micro-B USB Updatable

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$89.99

In stock

• Provides 12-Volt accessory power (RAP)
• Retains steering wheel control
• Micro-B USB Updatable

Axxess AXDI-A12 Wiring Interface

Install a New Car Stereo and Retain Factory Features in select 2002-2013 vehicles from Audi

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Install a New Car Stereo and Retain Factory Features in select 2002-2013 vehicles from Audi

• Wiring interface to install aftermarket stereo in select 2002-2013 vehicles from Audi
• Designed for non-amplified and amplified systems
• Provides accessory power and NAV outputs
• Retains R.A.P, balance and fade, and chimes
• Pre-wired AXSWC harness (AXSWC sold separately)

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List price $182.99
-10% $163.99

In stock

• Wiring interface to install aftermarket stereo in select 2002-2013 vehicles from Audi
• Designed for non-amplified and amplified systems
• Provides accessory power and NAV outputs
• Retains R.A.P, balance and fade, and chimes
• Pre-wired AXSWC harness (AXSWC sold separately)

iDataLink Maestro HRN-SR-VW1 Wiring Harness

Install a New Car Stereo in select 2002-2016 vehicles from Volkswagen, Audi (Requires ADS-MSR Module)

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Install a New Car Stereo in select 2002-2016 vehicles from Volkswagen, Audi (Requires ADS-MSR Module)

• Fits select 2002-2016 vehicles from Volkswagen, Audi
• Designed for use with iDataLink ADS-MSR module (Sold separately)
• Retains accessory power, factory amplifier and steering wheel controls
• Provides navigation and illumination outputs

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List price $37.99
-34% $24.99

In stock

• Fits select 2002-2016 vehicles from Volkswagen, Audi
• Designed for use with iDataLink ADS-MSR module (Sold separately)
• Retains accessory power, factory amplifier and steering wheel controls
• Provides navigation and illumination outputs

PAC RadioPro RP4-AD11 Wiring Interface

Install new car stereo and retains steering wheel audio controls and other factory features in select 2004-2015 vehicles from Audi

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Install new car stereo and retains steering wheel audio controls and other factory features in select 2004-2015 vehicles from Audi

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

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List price $379.00
-53% $176.99

Available

Ships in 10-14 days

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

iDataLink Maestro HRN-SR-AU1 Wiring Harness

Install a New Car Stereo in select 2002-2007 vehicles from Audi (Requires Maestro SR Module)

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Install a New Car Stereo in select 2002-2007 vehicles from Audi (Requires Maestro SR Module)

• Fits select 2002-2007 vehicles from Audi
• Designed for use with iDataLink ADS-MSR module (Sold separately)
• Retains factory amplifier and steering wheel controls
• Provides accessory power, navigation and illumination outputs

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List price $43.99
-20% $34.99

In stock

• Fits select 2002-2007 vehicles from Audi
• Designed for use with iDataLink ADS-MSR module (Sold separately)
• Retains factory amplifier and steering wheel controls
• Provides accessory power, navigation and illumination outputs

Metra AD-EU5

Amplified Antenna Adapter Cable for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

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Amplified Antenna Adapter Cable for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

• Amplified antenna adapter cable
• Compatible with select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Converts factory antenna to standard male Motorola plug
• Includes power wire to provide 12V signal
• Features "Mini-style" (FAKRA) connector
• Plug and play connection, no cutting of wires required

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List price $13.99
-14% $11.99

Available

Ships in 10-14 days

• Amplified antenna adapter cable
• Compatible with select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Converts factory antenna to standard male Motorola plug
• Includes power wire to provide 12V signal
• Features "Mini-style" (FAKRA) connector
• Plug and play connection, no cutting of wires required

Metra 99-9103 Dash Kit

Install a new Single-DIN car stereo in select 2000-2007 A4 and A3 (Matte Black)

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Install a new Single-DIN car stereo in select 2000-2007 A4 and A3 (Matte Black)

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

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Fits your A4
List price $51.99
-12% $45.99

Available

Ships in 10-14 days

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

Crux SWRAD-55 Wiring Interface

Install new car stereo and retains steering wheel audio controls and other factory features in select 2000-2010 vehicles from Audi

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Install new car stereo and retains steering wheel audio controls and other factory features in select 2000-2010 vehicles from Audi

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

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Fits your A4
List price $197.40
-36% $126.90

In stock.

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

iDataLink HRN-HRR-AU1

Install a New Car Stereo in select 2002-2015 vehicles from Audi (Requires ADS-MRR or ADS-MRR2 Module)

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Install a New Car Stereo in select 2002-2015 vehicles from Audi (Requires ADS-MRR or ADS-MRR2 Module)

• Fits select 2002-2015 vehicles from Audi
• Designed for use with iDataLink ADS-MRR or iDataLink ADS-MRR2 module (Sold separately)
• Retains select factory features
• Provides navigation and illumination outputs

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List price $99.99
-20% $79.99

In stock

• Fits select 2002-2015 vehicles from Audi
• Designed for use with iDataLink ADS-MRR or iDataLink ADS-MRR2 module (Sold separately)
• Retains select factory features
• Provides navigation and illumination outputs

NVX - Worth the Envy - Direct to Consumer Car Audio

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    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.
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    FAQ for Aftermarket Stereo Installation Accessories in 2005 A4

    Q: Can I upgrade or change the Aftermarket Stereo Installation Accessories in 2005 Audi A4?

    A: Yes this page includes all the best Aftermarket Stereo Installation Accessories that work in your A4.

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    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.