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Crux AUX-ABMP1

Auxiliary Audio Input Interface for Fiber Optic Systems - Audi, BMW, Mercedes Benz & Porsche

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Auxiliary Audio Input Interface for Fiber Optic Systems - Audi, BMW, Mercedes Benz & Porsche

• AUX Audio Integration for Fiber Optic Systems
• For Select 2004 - Up BMW/Mercedes/Audi and Porsche Vehicles
• Dimensions: 3.5"L x 2.5"W x 7"H

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FREE shipping to VA. Delivers Apr. 6 - Apr. 10

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found car based on your search
This product fits your 2003 Boxster
Was $349.95 Details
$215.95

In stock.

• AUX Audio Integration for Fiber Optic Systems
• For Select 2004 - Up BMW/Mercedes/Audi and Porsche Vehicles
• Dimensions: 3.5"L x 2.5"W x 7"H

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Item added to your cart.

Price: $215.95

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Metra 40-EU55 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1998-2024 vehicles from BMW, Chevrolet, GMC

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Connect your factory antenna to a new aftermarket radio for select 1998-2024 vehicles from BMW, Chevrolet, GMC

• Antenna Adapter Cable
• Compatible with select 1998-2024 vehicles from BMW, Chevrolet, GMC Vehicles
• Powered antenna and newer "FACRA" style connector to aftermarket radio

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
30
Was $27.99 Details
$13.99

In stock

• Antenna Adapter Cable
• Compatible with select 1998-2024 vehicles from BMW, Chevrolet, GMC Vehicles
• Powered antenna and newer "FACRA" style connector to aftermarket radio

Metra 40-VW10 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen

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Connect your factory antenna to a new aftermarket radio for select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen

• Factory Antenna to Aftermarket Radio Adapter
• Compatible with select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen Vehicles
• Factory antenna with flat plug to aftermarket radio
• A capacitor is included to match the impedance

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
14
Was $19.99 Details
$7.99

In stock

• Factory Antenna to Aftermarket Radio Adapter
• Compatible with select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen Vehicles
• Factory antenna with flat plug to aftermarket radio
• A capacitor is included to match the impedance

Metra 44-PW530 Antenna

Universal Fully Automatic Power Antenna

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Universal Fully Automatic Power Antenna

• Replacement Power Antenna for Select Vehicles
• Replaceable Mast
• Fully Automatic

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FREE 2-day shipping to VA. Get it Tue, Apr. 2

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found car based on your search
This product fits your 2003 Boxster
2
Was $129.99 Details
$85.99

In stock

Only 3 Left!

• Replacement Power Antenna for Select Vehicles
• Replaceable Mast
• Fully Automatic

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Item added to your cart.

Price: $85.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Metra 40-VW30 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1973-2017 vehicles from BMW, Volkswagen, Audi

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Connect your factory antenna to a new aftermarket radio for select 1973-2017 vehicles from BMW, Volkswagen, Audi

• Antenna Adapter Kit
• Compatible with select 1973-2017 vehicles from BMW, Volkswagen, Audi Vehicles
• For adding source units with FM modulator

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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2
Was $29.99 Details
$19.99

In stock

Only 3 Left!

• Antenna Adapter Kit
• Compatible with select 1973-2017 vehicles from BMW, Volkswagen, Audi Vehicles
• For adding source units with FM modulator

Metra 40-VW53 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen

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Connect your factory antenna to a new aftermarket radio for select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen

• Aftermarket Radio To Factory Antenna Adapter (Amplified)
• Compatible with select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen Vehicles
• Includes Power Wire For Antenna Booster
• Can Be Used In Place Of 40-VW54

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
3
$12.99

In stock

Only 3 Left!

• Aftermarket Radio To Factory Antenna Adapter (Amplified)
• Compatible with select 1973-2019 vehicles from Mercedes-Benz, Audi, Volkswagen Vehicles
• Includes Power Wire For Antenna Booster
• Can Be Used In Place Of 40-VW54

Metra 40-EU20 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1998-2024 vehicles from BMW, Chevrolet, Ford

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Connect your factory antenna to a new aftermarket radio for select 1998-2024 vehicles from BMW, Chevrolet, Ford

• Radio to Antenna Adapter
• select 1998-2024 vehicles from BMW, Chevrolet, Ford Vehicles
• Factory radio with mini-style plug to universal antenna

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
Was $29.99 Details
$8.99

In stock

Only 3 Left!

• Radio to Antenna Adapter
• select 1998-2024 vehicles from BMW, Chevrolet, Ford Vehicles
• Factory radio with mini-style plug to universal antenna

Metra 40-VW20 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1982-2019 vehicles from Mercedes-Benz, Audi, Volkswagen

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Connect your factory antenna to a new aftermarket radio for select 1982-2019 vehicles from Mercedes-Benz, Audi, Volkswagen

• Factory Radio to Aftermarket Antenna Adapter
• Compatible with select 1982-2019 vehicles from Mercedes-Benz, Audi, Volkswagen Vehicles

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
Was $29.99 Details
$4.99

In stock

• Factory Radio to Aftermarket Antenna Adapter
• Compatible with select 1982-2019 vehicles from Mercedes-Benz, Audi, Volkswagen Vehicles

Metra 70-9401 Wiring Harness

Install a new car stereo in select 1994-2017 vehicles from Mercedes-Benz, Porsche, Ford

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Install a new car stereo in select 1994-2017 vehicles from Mercedes-Benz, Porsche, Ford

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

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
3
Was $29.99 Details
$8.99

In stock

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

Metra 81-4300

Universal Speaker Baffles for 5-1/4" and 6-1/2" Speakers

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Universal Speaker Baffles for 5-1/4" and 6-1/2" Speakers

• Universal Speaker Baffles
• Works for 5-1/4" & 6-1/2" Speakers
• Durable ABS Plastic Construction
• Protects the Back of the Speaker
• Reduces Panel Vibration
• Blocks Road Noise
• Creates a Tight Acoustic Seal

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
24
Was $19.99 Details
$10.99

In stock

• Universal Speaker Baffles
• Works for 5-1/4" & 6-1/2" Speakers
• Durable ABS Plastic Construction
• Protects the Back of the Speaker
• Reduces Panel Vibration
• Blocks Road Noise
• Creates a Tight Acoustic Seal

Limited time!

Infinity Kappa 503CF

480W Peak (160W RMS) 5.25” Kappa Series 2-way Component Speakers System

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480W Peak (160W RMS) 5.25” Kappa Series 2-way Component Speakers System

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge-Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohms
• Sensitivity: 93 dB

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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
Was $449.95 Details
Save $220.95
$229.00 /set

In stock

Limited time!

Alpine S2-S40

280W Peak (90W RMS) 4" S-Series 2-way Coaxial Car Speakers

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280W Peak (90W RMS) 4" S-Series 2-way Coaxial Car Speakers

• 140 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 86 dB

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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Dash Corner
1
Was $120.00 Details
Save $48.05
$71.95 /pair

In stock

Limited time!

Alpine S2-S50

340W Peak (110W RMS) 5.25" S-Series 2-way Coaxial Car Speakers

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340W Peak (110W RMS) 5.25" S-Series 2-way Coaxial Car Speakers

• 170 watts Peak Each, 55 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 87 dB

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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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VIP Product Get $8.80 in rewards to spend later

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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
1
Was $140.00 Details
Save $52.05
$87.95 /pair

In stock

Only 3 Left!

Hertz DSK130.3

120W Peak (60W RMS) 5.25” Dieci Series Component Speakers

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120W Peak (60W RMS) 5.25” Dieci Series Component Speakers

• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohms Impedance
• Sensitivity: 93 dB

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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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VIP Product Get $20.00 in rewards to spend later

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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
Was $225.00 Details
$199.99 /set

In stock

AudioControl PNW-525

150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Speakers

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150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Speakers

• 75 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohms
• Sensitivity: 84 dB

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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
Was $249.00 Details
$229.00 /pair

In stock

Only 3 Left!

• 75 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohms
• Sensitivity: 84 dB

NVX XBAF525

2 Piece Universal 5.25” Silicone Rubber Speaker Baffles with Self Adhesive Foam Base Pad

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2 Piece Universal 5.25” Silicone Rubber Speaker Baffles with Self Adhesive Foam Base Pad

• Foldable Silicone with egg crate foam
• Creates a tight seal around your speaker for optimum sound quality
• Waterproof material
• The foam baffles from the competitors will deteriorate over time, while the rubber XBAF65's will last a lifetime

Save 10% at CheckoutShop all deals
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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
5
Was $19.99 Details
$16.99

In stock

• Foldable Silicone with egg crate foam
• Creates a tight seal around your speaker for optimum sound quality
• Waterproof material
• The foam baffles from the competitors will deteriorate over time, while the rubber XBAF65's will last a lifetime

MB QUART PS1-213

240W Peak (120W RMS) 5.25" Premium Series 2-Way Component Speaker System

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240W Peak (120W RMS) 5.25" Premium Series 2-Way Component Speaker System

• 120 watts Peak Each, 60 watts RMS Each
• 1" Magnesium Dome Tweeters
• Paper cone material
• Impedance: 4 ohms
• Sensitivity: 86.5 dB

Buy More, Save MoreView Terms
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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
Was $209.99 Details
$199.99 /set

In stock

Only 3 Left!

The Install Bay VXT55

XTC 5" to 5-1/4" Round Foam Acoustic Speaker Baffles

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XTC 5" to 5-1/4" Round Foam Acoustic Speaker Baffles

• Round Foam Speaker Baffles
• For 5" to 5-1/4" Speakers
• Made from a Waterproof Foam
• Greatly Enhances the Sound and Performance of the Speakers
• Reduces Panel Vibration

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Fast 3-day shipping to VA. Get it Wed, Apr. 3

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found car based on your search
This product fits your 2003 Boxster
15
Was $16.99 Details
$14.99

In stock

Only 3 Left!

• Round Foam Speaker Baffles
• For 5" to 5-1/4" Speakers
• Made from a Waterproof Foam
• Greatly Enhances the Sound and Performance of the Speakers
• Reduces Panel Vibration

Kicker 51KSS504

400W Peak (200W RMS) 5.25" KS Series 2-way 4-ohm Component Speaker System

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400W Peak (200W RMS) 5.25" KS Series 2-way 4-ohm Component Speaker System

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB

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FREE 2-day shipping to VA. Get it Tue, Apr. 2
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Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
Was $279.99 Details
$249.99 /set

In stock

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB

Polk Audio DB522

600W Peak (200W RMS) 5.25" DB+ Series 2-way Car and Marine Certified Coaxial Speakers

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600W Peak (200W RMS) 5.25" DB+ Series 2-way Car and Marine Certified Coaxial Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 91 dB

Buy More, Save MoreView Terms
shipping truck icon
FREE 2-day shipping to VA. Get it Tue, Apr. 2
install icon

Adapter/Wire Harness available and sold separately

found car based on your search
Fits the following location in your 2003 Boxster
  • Front Door
12
Was $99.99 Details
$89.00 /pair

In stock

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    FAQ for your 2003 Boxster

    Q: Can I upgrade the factory stereo system in my 2003 Porsche Boxster?

    A: Yes you can improve your sound in your Boxster by upgrading your speakers and/or adding an amplifier. You may also be able to update the stereo and main display in your 2003 Boxster if there is a dash kit and harness solution available.

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    2003 Porsche Boxster

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    • Owner’s manual
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    • Vehicle produced after 2005: Inside driver’s side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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