Garage
Shop

Browse our catalog for your 2004 525i close

Loading...
Filters

We are sorry, no available results!

Your Vehicle

Shop the Category

filter-icon Filters & Sort

Metra 40-EU55 Antenna Adapter

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

40-EU55 big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

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

Crux AUX-BM4

Auxiliary Audio Input Interface and OBD Coder for 2003-2014 BMW Professional CCC Navigation Radio

AUX-BM4 big
Go to item page Right Arrow Icon of Right Arrow

Auxiliary Audio Input Interface and OBD Coder for 2003-2014 BMW Professional CCC Navigation Radio

• AUX Audio Integration
• For Select 2004 - Up BMW Vehicles

shipping truck icon
FREE shipping to VA. Delivers Apr. 5 - Apr. 9

empty

Was $237.95 Details
$146.95

In stock.

• AUX Audio Integration
• For Select 2004 - Up BMW Vehicles

AUX-BM4 small

Item added to your cart.

Price: $146.95

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-EU10 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

40-EU10 big
Go to item page Right Arrow Icon of Right Arrow

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

• Antenna to Radio Adapter Cable
• This adapter works with 2000 and up Volkswagen, BMW, and European factory antenna connectors with the mini-style plug
• Factory antenna with mini-style plug to aftermarket radio

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

30
Was $19.99 Details
$7.99

In stock

• Antenna to Radio Adapter Cable
• This adapter works with 2000 and up Volkswagen, BMW, and European factory antenna connectors with the mini-style plug
• Factory antenna with mini-style plug to aftermarket radio

Crux SWR-A

Steering Wheel Control Retention Interface for Analog SWC

SWR-A big
Go to item page Right Arrow Icon of Right Arrow

Steering Wheel Control Retention Interface for Analog SWC

• Retains Steering Wheel Controls
• Retains VR Command
• Works with Sony Radio with CarPlay Function
• Dimension: 3.5" L x 2.5" W x 7" H

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

Was $69.95 Details
$43.95

In stock

Only 1 Left!

• Retains Steering Wheel Controls
• Retains VR Command
• Works with Sony Radio with CarPlay Function
• Dimension: 3.5" L x 2.5" W x 7" H

SWR-A small

Item added to your cart.

Price: $43.95

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

Scosche VWA3B Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

VWA3B big
Go to item page Right Arrow Icon of Right Arrow

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

• select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz Vehicles
• Aftermarket Antenna Male (Motorola Plug) to Factory Radio Female (Proprietary Plug)

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

52
Was $9.44 Details
$8.95

In stock

Only 3 Left!

• select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz Vehicles
• Aftermarket Antenna Male (Motorola Plug) to Factory Radio Female (Proprietary Plug)

Scosche VWA3RB Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

VWA3RB big
Go to item page Right Arrow Icon of Right Arrow

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

• select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz Vehicles
• Aftermarket Antenna Female (Motorola Plug) to Factory Radio Male (Proprietary Plug)

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

1
Was $19.99 Details
$9.95

In stock

• select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz Vehicles
• Aftermarket Antenna Female (Motorola Plug) to Factory Radio Male (Proprietary Plug)

Metra 40-EU20 Antenna Adapter

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

40-EU20 big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

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

Crux CBM-02T

Trunk Handle Camera For select 2004-2016 vehicles from BMW

CBM-02T big
Go to item page Right Arrow Icon of Right Arrow

Trunk Handle Camera For select 2004-2016 vehicles from BMW

• Tailgate Handle Mount Rearview Backup Camera For Select 2004 -2016 BMW Vehicles
• IP67 Waterproof Rating
• Resolution: 480 TV Lines
• Viewing Angle: 170°
• Dimensions: 4.8"L x 3"W x 2.5"H

shipping truck icon
FREE 3-day shipping to VA. Get it Tue, Apr. 2

empty

Was $167.95 Details
$103.95

In stock

Only 2 Left!

• Tailgate Handle Mount Rearview Backup Camera For Select 2004 -2016 BMW Vehicles
• IP67 Waterproof Rating
• Resolution: 480 TV Lines
• Viewing Angle: 170°
• Dimensions: 4.8"L x 3"W x 2.5"H

CBM-02T small

Item added to your cart.

Price: $103.95

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-EU30 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

40-EU30 big
Go to item page Right Arrow Icon of Right Arrow

Connect your factory antenna to a new aftermarket radio for select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz

• Antenna Adapter Kit
• select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz Vehicles
• Antenna adapters for adding CD changer or other sources with FM modulator

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

Was $49.99 Details
$10.99

In stock

• Antenna Adapter Kit
• select 2001-2020 vehicles from BMW, GMC, Mercedes-Benz Vehicles
• Antenna adapters for adding CD changer or other sources with FM modulator

Scosche LPBW15 Wiring Interface

Install new car stereo and retain steering wheel audio controls and safety warning chimes in select 2002-2018 vehicles from BMW, MINI

LPBW15 big
Go to item page Right Arrow Icon of Right Arrow

Install new car stereo and retain steering wheel audio controls and safety warning chimes in select 2002-2018 vehicles from BMW, MINI

• Provides 12-Volt accessory power (RAP)
• Retains steering wheel control
• Retains all safety and warning chimes
• Micro-B USB Updatable

shipping truck icon
FREE 3-day shipping to VA. Get it Tue, Apr. 2

empty

Was $155.95 Details
$151.99

In stock

• Provides 12-Volt accessory power (RAP)
• Retains steering wheel control
• Retains all safety and warning chimes
• Micro-B USB Updatable

LPBW15 small

Item added to your cart.

Price: $151.99

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

Crux VRFBM-77D

Rear-view & Front-view Integration for BMW E-Series w/ CCC Navigation & 10-Pin LVDS Connector

VRFBM-77D big
Go to item page Right Arrow Icon of Right Arrow

Rear-view & Front-view Integration for BMW E-Series w/ CCC Navigation & 10-Pin LVDS Connector

• Factory Improvement Harness for Activating Both Rear-view and Front-view Cameras
• For Select BMW Vehicles with CCC Navigation Systems with 8.8" or 6.5" Monitors
• Rear view and Front view camera inputs
• Compatible with all factory video accessories
• Dimension: 5" L x 2.5" W x 8.8" H

shipping truck icon
FREE shipping to VA. Delivers Apr. 5 - Apr. 9

empty

Was $597.95 Details
$369.95

In stock.

• Factory Improvement Harness for Activating Both Rear-view and Front-view Cameras
• For Select BMW Vehicles with CCC Navigation Systems with 8.8" or 6.5" Monitors
• Rear view and Front view camera inputs
• Compatible with all factory video accessories
• Dimension: 5" L x 2.5" W x 8.8" H

VRFBM-77D small

Item added to your cart.

Price: $369.95

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

Scosche BW2380SRB Dash Kit

Install a new Double-DIN car stereo in select 2004-2007 vehicles from BMW (Black)

BW2380SRB big
Go to item page Right Arrow Icon of Right Arrow

Install a new Double-DIN car stereo in select 2004-2007 vehicles from BMW (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 3-day shipping to VA. Get it Tue, Apr. 2

empty

Was $419.95 Details
$389.99

In stock

Only 1 Left!

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

BW2380SRB small

Item added to your cart.

Price: $389.99

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

Raptor AD-EU1 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2000-2020 vehicles from BMW, Mercedes-Benz, GMC

AD-EU1 big
Go to item page Right Arrow Icon of Right Arrow

Connect your factory antenna to a new aftermarket radio for select 2000-2020 vehicles from BMW, Mercedes-Benz, GMC

Antenna to Radio Adapter Cable
• select 2000-2020 vehicles from BMW, Mercedes-Benz, GMC Vehicles
• Factory antenna with mini-style plug to aftermarket radio

shipping truck icon
Get it Wed, Apr. 3 to VA. Order $49+ to ship free.

empty

1
Was $19.99 Details
$6.99

In stock

Antenna to Radio Adapter Cable
• select 2000-2020 vehicles from BMW, Mercedes-Benz, GMC Vehicles
• Factory antenna with mini-style plug to aftermarket radio

Diamond Audio VSP4BMW

160W Peak (80W RMS) BMW® Specific 2-Way 4” Component Speaker Set

VSP4BMW big
Go to item page Right Arrow Icon of Right Arrow

160W Peak (80W RMS) BMW® Specific 2-Way 4” Component Speaker Set

• 80 Watts Max Each, 40 Watts RMS Each
• (25mm Silk Dome Tweeters
• Glass Fiber Reinforced Cone
• 4 Ohms Impedance
• Sensitivity: 85.6 dB
• Mounting Depth: 1.94"

Buy More, Save MoreView Terms
shipping truck icon
FREE 3-day shipping to VA. Get it Tue, Apr. 2

empty

$449.99

In stock

Only 3 Left!

• 80 Watts Max Each, 40 Watts RMS Each
• (25mm Silk Dome Tweeters
• Glass Fiber Reinforced Cone
• 4 Ohms Impedance
• Sensitivity: 85.6 dB
• Mounting Depth: 1.94"

VSP4BMW small

Item added to your cart.

Price: $449.99

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

Crux ACPBM-77X

Smart-Play Integration with Rear-View Camera Input for E Series BMW with CCC Systems (6.5” or 8.8” Monitor) and 10-Pin LVDS Connector

ACPBM-77X big
Go to item page Right Arrow Icon of Right Arrow

Smart-Play Integration with Rear-View Camera Input for E Series BMW with CCC Systems (6.5” or 8.8” Monitor) and 10-Pin LVDS Connector

• Adds aftermarket rearview camera input
• Built-in on-screen display and setup.
• Allows connection of Android and other devices
• Dimensions: 10"L x 7.75"W x 3.25"H

shipping truck icon
FREE shipping to VA. Delivers Apr. 5 - Apr. 9
VIP Star Icon

VIP Product Get $53.90 in rewards to spend later

empty

Was $839.95 Details
$538.95

In stock.

• Adds aftermarket rearview camera input
• Built-in on-screen display and setup.
• Allows connection of Android and other devices
• Dimensions: 10"L x 7.75"W x 3.25"H

ACPBM-77X small

Item added to your cart.

Price: $538.95

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

Diamond Audio VSP8BMW

Specific-fit 8” Subwoofers for select 2004-2022 vehicles from BMW (Pair)

VSP8BMW big
Go to item page Right Arrow Icon of Right Arrow

Specific-fit 8” Subwoofers for select 2004-2022 vehicles from BMW (Pair)

• 200 Watts Max Each
• 100 Watts RMS Each
• Glass Fiber Reinforced Cone
• High-Strength Stamped Steel Frame
• FEA Optimized High-Power Neodymium Motor Structure
• Separate Optimized Crossover Module

Buy More, Save MoreView Terms
shipping truck icon
FREE 3-day shipping to VA. Get it Tue, Apr. 2

empty

$449.99

In stock

Only 3 Left!

• 200 Watts Max Each
• 100 Watts RMS Each
• Glass Fiber Reinforced Cone
• High-Strength Stamped Steel Frame
• FEA Optimized High-Power Neodymium Motor Structure
• Separate Optimized Crossover Module

VSP8BMW small

Item added to your cart.

Price: $449.99

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

Diamond Audio VSP4BMW (Open-Box, Damaged Packaging)

BMW® Specific 2-Way 4” Component Speaker Set

VSP4BMW big
Go to item page Right Arrow Icon of Right Arrow

BMW® Specific 2-Way 4” Component Speaker Set

• 80 Watts Max Each, 40 Watts RMS Each
• (25mm Silk Dome Tweeters
• Glass Fiber Reinforced Cone
• 4 Ohms Impedance
• Sensitivity: 85.6 dB
• Mounting Depth: 1.94"

shipping truck icon
FREE 3-day shipping to VA. Get it Tue, Apr. 2

empty

Was $449.99 Details
$359.99

In stock

Only 3 Left!

• 80 Watts Max Each, 40 Watts RMS Each
• (25mm Silk Dome Tweeters
• Glass Fiber Reinforced Cone
• 4 Ohms Impedance
• Sensitivity: 85.6 dB
• Mounting Depth: 1.94"

Bavsound BSD.GUSW.2O-KIT

320W Peak (160W RMS) Ghost Series Under Seat Subwoofers for BMW

Go to item page Right Arrow Icon of Right Arrow

320W Peak (160W RMS) Ghost Series Under Seat Subwoofers for BMW

• Peak Power: 320 watts
• RMS Power: 160 watts
• Impedance: 8 ohms
• Polypropylene Cone
• Rubber Surround

empty

• Peak Power: 320 watts
• RMS Power: 160 watts
• Impedance: 8 ohms
• Polypropylene Cone
• Rubber Surround

BSD.GUSW.2O-KIT small

Item added to your cart.

Price: $649.00

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

Crux BEEBM-45

Bluetooth® Connectivity Kit for select 2002-2014 BMW Factory Radios (CAN version)

Go to item page Right Arrow Icon of Right Arrow

Bluetooth® Connectivity Kit for select 2002-2014 BMW Factory Radios (CAN version)

• Bluetooth Version 2.1 Connectivity for select 2002-2014 BMW Vehicles (CAN version)
• Allows calls to be heard through the factory-installed sound system
• Answer and end calls using the steering wheel controls (SWC)
• A2DP Bluetooth Profile to stream music
• Make calls using voice dialing feature
• Dimensions: 5"L x 2.5"W x 8.8"H

empty

1
Was $337.95 Details
$207.95

• Bluetooth Version 2.1 Connectivity for select 2002-2014 BMW Vehicles (CAN version)
• Allows calls to be heard through the factory-installed sound system
• Answer and end calls using the steering wheel controls (SWC)
• A2DP Bluetooth Profile to stream music
• Make calls using voice dialing feature
• Dimensions: 5"L x 2.5"W x 8.8"H

BEEBM-45 small

Item added to your cart.

Price: $207.95

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

Bavsound BSD.SW.E38R.ALL-KIT

Rear Deck Subwoofer Replacement Kit (4 Speakers) BMW E38 7 Series 1995-2001

Go to item page Right Arrow Icon of Right Arrow

Rear Deck Subwoofer Replacement Kit (4 Speakers) BMW E38 7 Series 1995-2001

• Direct-fit subwoofer replacements for BMW E38 models
• 100% Do-it-yourself, plug & play, easy install
• Features UV-treated cones and dust caps
• Includes everything you need except tools
• Black glass fiber reinforced cones

empty

• Direct-fit subwoofer replacements for BMW E38 models
• 100% Do-it-yourself, plug & play, easy install
• Features UV-treated cones and dust caps
• Includes everything you need except tools
• Black glass fiber reinforced cones

No picture

Item added to your cart.

Price: $399.00

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

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?
    ADVERTISEMENT
    Save up to 10 different vehicles in your garage

    2004 BMW 525i

    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