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2003 Lexus RX300

Easily improve your factory OEM stereo's sound system

Better sound with a factory radio for 2003 Lexus RX300

Some factory stereos do not make it easy to be replaced, but you can still add an amp or sub via an integration harness to improve your sound. Additionally, we have custom speaker solutions to make upgrading your sound easy! Lastly, we also have add-ons to upgrade your factory display to get integrate features from a smartphone (via Apple CarPlay or Android Auto) or a backup camera.

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Memphis PRXTY60C

200W Peak (100W RMS) 6.5" Power Reference Series 2-Way Coaxial Car Speakers

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200W Peak (100W RMS) 6.5" Power Reference Series 2-Way Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 0.98" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 90 dB

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found car based on your search
This product fits your 2003 RX300
Was $239.95 Details
$199.95

Available

Ships in 10-14 days

• 100 watts Peak Each, 50 watts RMS Each
• 0.98" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 90 dB

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Item added to your cart.

Price: $199.95

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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

GROM Audio TOYFU3 (GROM-USB3-TOYF)

Android and iOS Smartphone Integration for Select 1999 - 2003 Lexus Vehicles

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Android and iOS Smartphone Integration for Select 1999 - 2003 Lexus Vehicles

• Android, Bluetooth, iPhone, iPod Integration Kit
• Compatible With Select 1999-2003 Lexus Stereos
• Optional 3.5mm AUX and Bluetooth
• Streaming Audio for Android 4.1 and Above

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found car based on your search
This product fits your 2003 RX300
$174.99

In stock

Only 1 Left!

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Item added to your cart.

Price: $174.99

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
Essential add-ons
GROM Audio C-35USB

5 Ft 3.5mm Auxiliary Input Cable with 5 Volt USB Charging

$16.99

$19.99

Add to cart
GROM Audio BTD

Optional Bluetooth Module for Music Streaming and Hands Free Calling

$64.99

$64.99

Add to cart
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart

iDataLink ADS-MRR Maestro RR Interface Module

Install a new stereo and retain the steering wheel audio controls and other factory features in

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Install a new stereo and retain the steering wheel audio controls and other factory features in

• Radio Replacement Interface with Steering wheel Control and Factory Amp Integration
• For Use w/ Select 2006-Up Vehicle Harnesses
• Assign Each Control a Secondary Function
• Program it Yourself with a Windows Based Computer

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Universal-fit, works with nearly all vehicles.
22
Was $199.99 Details
$159.99

In stock

• Radio Replacement Interface with Steering wheel Control and Factory Amp Integration
• For Use w/ Select 2006-Up Vehicle Harnesses
• Assign Each Control a Secondary Function
• Program it Yourself with a Windows Based Computer

ADS-MRR small

Item added to your cart.

Price: $159.99

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 ACP-WLX Interface

Wireless CarPlay and Android Auto Dongle for Select OEM and Aftermarket Radios with CarPlay or Android Auto

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Wireless CarPlay and Android Auto Dongle for Select OEM and Aftermarket Radios with CarPlay or Android Auto

• Converts wired CarPlay and Android Auto to wireless.
• Works on select OEM and Aftermarket radios with built-in CarPlay or Android Auto.
• Completely plug and play

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VIP Product Get $18.00 in rewards to spend later

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universal icon
Universal-fit, works with nearly all vehicles.
Was $319.95 Details
$179.99

In stock.

• Converts wired CarPlay and Android Auto to wireless.
• Works on select OEM and Aftermarket radios with built-in CarPlay or Android Auto.
• Completely plug and play

ACP-WLX small

Item added to your cart.

Price: $179.99

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
Essential add-ons
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart

Scosche IPFMRDS

iPod Interface Auxiliary Input for Select 1995-Up Select RDS Radios

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iPod Interface Auxiliary Input for Select 1995-Up Select RDS Radios

• iPod FM Modulator Interface
• For Select 1995-Up RDS Radios
• Allows Connection Of iPod Directly To Factory Stereo
• Updated For 5V USB Charging

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universal icon
Universal-fit, works with nearly all vehicles.
1
Was $149.95 Details
$29.99

In stock

Only 2 Left!

• iPod FM Modulator Interface
• For Select 1995-Up RDS Radios
• Allows Connection Of iPod Directly To Factory Stereo
• Updated For 5V USB Charging

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Item added to your cart.

Price: $29.99

Essential add-ons
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart

iDatalink ADS-MRR2 Wiring Interface

Install a new stereo and retain the steering wheel audio controls and other factory features in

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Install a new stereo and retain the steering wheel audio controls and other factory features in

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Allows setup via Bluetooth-enabled device or mini-USB-to-USB-A cable
• Retains the safety warning chimes
• Retains RSE (rear seat entertainment)

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VIP Product Get $21.00 in rewards to spend later

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universal icon
Universal-fit, works with nearly all vehicles.
1
Was $259.99 Details
$209.99

In stock

• Provides 12-Volt accessory power (RAP)
• Designed for non-amplified and amplified models
• Allows setup via Bluetooth-enabled device or mini-USB-to-USB-A cable
• Retains the safety warning chimes
• Retains RSE (rear seat entertainment)

ADS-MRR2 small

Item added to your cart.

Price: $209.99

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 WVI-H

Wifi Connectivity and Smartphone Integration Interface with HDMI Output and Camera Input

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Wifi Connectivity and Smartphone Integration Interface with HDMI Output and Camera Input

• Enables wireless (Wi-Fi) Audio/Video mirroring from mobile devices to an aftermarket screen or an OEM
• Includes a USB input to play audio and video files
• Dual band (5GHz and 2.4GHz) Wifi capability for clear connection
•Works with Facetime, Maps, Skype, YouTube, and other apps.
• Works with iOS and Android devices

Save 10% at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $17.00 in rewards to spend later

empty

universal icon
Universal-fit, works with nearly all vehicles.
Was $275.95 Details
$169.95

In stock

Only 1 Left!

• Enables wireless (Wi-Fi) Audio/Video mirroring from mobile devices to an aftermarket screen or an OEM
• Includes a USB input to play audio and video files
• Dual band (5GHz and 2.4GHz) Wifi capability for clear connection
•Works with Facetime, Maps, Skype, YouTube, and other apps.
• Works with iOS and Android devices

WVI-H small

Item added to your cart.

Price: $169.95

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

iDataLink ADS-MSR

Install a new car stereo and retains other factory features for

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Install a new car stereo and retains other factory features for

• Provides 12-Volt accessory power (RAP)
• Retains the factory backup camera
• Micro-B USB Updatable
• Compatible with new line of MSR vehicle-specific T-Harnesses

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VIP Star Icon

VIP Product Get $11.50 in rewards to spend later

empty

universal icon
Universal-fit, works with nearly all vehicles.
Was $129.99 Details
$114.99

In stock

• Provides 12-Volt accessory power (RAP)
• Retains the factory backup camera
• Micro-B USB Updatable
• Compatible with new line of MSR vehicle-specific T-Harnesses

ADS-MSR small

Item added to your cart.

Price: $114.99

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 ACP-WL

Wireless CarPlay Dongle for Select Factory & Aftermarket Radios with CarPlay

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Wireless CarPlay Dongle for Select Factory & Aftermarket Radios with CarPlay

• Plug-and-play interface that converts wired Apple CarPlay in factory and select aftermarket car stereos to wireless Apple CarPlay
• Compatible with Kenwood, Pioneer, JVC, Sony, and Alpine car stereos with wired Apple CarPlay
• Pass-through USB port allows wired CarPlay connection to charge iPhone battery

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

VIP Product Get $17.00 in rewards to spend later

empty

universal icon
Universal-fit, works with nearly all vehicles.
Was $279.95 Details
$169.95

In stock

Only 1 Left!

• Plug-and-play interface that converts wired Apple CarPlay in factory and select aftermarket car stereos to wireless Apple CarPlay
• Compatible with Kenwood, Pioneer, JVC, Sony, and Alpine car stereos with wired Apple CarPlay
• Pass-through USB port allows wired CarPlay connection to charge iPhone battery

ACP-WL small

Item added to your cart.

Price: $169.95

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
Essential add-ons
Five Piece Installer's Panel Removal Tool Kit

Helps with removing dash and trim panels during car stereo installation.

$18.99

$11.99

Add to cart

iDataLink HRN-RR-CHK

iDatalink Maestro ADS-MRR Replacement Harness

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iDatalink Maestro ADS-MRR Replacement Harness

• Provides 12V /15V accessory power (RAP)
• Compatible with the iDatalink Maestro ADS-MRR
• Direct from manufacturer replacement parts

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

empty

universal icon
Universal-fit, works with nearly all vehicles.
Was $21.99 Details
$16.99

In stock

• Provides 12V /15V accessory power (RAP)
• Compatible with the iDatalink Maestro ADS-MRR
• Direct from manufacturer replacement parts

iDatalink ADS-MAR

Wire Harness to Replace Premium Sound System Factory Amplifiers for

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Wire Harness to Replace Premium Sound System Factory Amplifiers for

• Seamless integration with compatible amplifiers
• Retain factory radio and infotainment systems
• Works with a vehicle-specific T-harness
• Enhances sound quality in vehicles
• Black finish
• Connects to select iDatalink-compatible amp

Save 10% at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

empty

universal icon
Universal-fit, works with nearly all vehicles.
Was $129.99 Details
$99.99

In stock

• Seamless integration with compatible amplifiers
• Retain factory radio and infotainment systems
• Works with a vehicle-specific T-harness
• Enhances sound quality in vehicles
• Black finish
• Connects to select iDatalink-compatible amp

ADS-MAR small

Item added to your cart.

Price: $99.99

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
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    FAQ for Better sound with a factory radio in 2003 RX300

    Q: Can I upgrade or change the Better sound with a factory radio in 2003 Lexus RX300?

    A: Yes this page includes all the best Better sound with a factory radio that work in your RX300.

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