Our research team makes it easy to shop for you 2003 Nissan Altima as we have many parts that fit your vehicle. As an added bonus, most stereos include a free or discounted dash kit, wiring harness and antenna adapter!
6.5" or 6.75" Speaker Adapters for select 1995-2024 vehicles from Nissan, Infiniti, Suzuki
• American International Speaker Adapters
• Compatible with select 1995-2024 vehicles from Nissan, Infiniti, Suzuki Vehicles
• Designed for 6.5" or 6.75" speakers
• Outer Diameter: 7.203"
• Inner Diameter: 5.768"
• Height: 0.83"
• American International Speaker Adapters
• Compatible with select 1995-2024 vehicles from Nissan, Infiniti, Suzuki Vehicles
• Designed for 6.5" or 6.75" speakers
• Outer Diameter: 7.203"
• Inner Diameter: 5.768"
• Height: 0.83"
Speaker Harness for select 1991-2024 vehicles from Nissan
• Compatible with select 1991-2024 vehicles from Nissan Vehicles
• Quick and easy installation
• No cutting into original wires needed
• Plugs directly into harness
• Compatible with select 1991-2024 vehicles from Nissan Vehicles
• Quick and easy installation
• No cutting into original wires needed
• Plugs directly into harness
2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Nissan 1995-2013
• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio
• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio
Install a new Double-DIN car stereo in select 2002-2006 Nissan Altima (Black)
• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions
• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions
Connect your factory antenna to a new aftermarket radio for select 1989-2015 vehicles from Nissan, Infiniti
• select 1989-2015 vehicles from Nissan, Infiniti Vehicles Factory Antenna Adapter to Aftermarket Radios • Converts OEM Nissan antenna to standard Motorola male • Use when replacing factory radio
• select 1989-2015 vehicles from Nissan, Infiniti Vehicles Factory Antenna Adapter to Aftermarket Radios • Converts OEM Nissan antenna to standard Motorola male • Use when replacing factory radio
Install a new Double-DIN car stereo in select 2002-2006 Nissan Altima (Black)
• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions
• Double-DIN Dash Kit
• Painted scratch-resistant black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions
Connect your factory antenna to a new aftermarket radio for select 1987-2024 vehicles from Nissan, Infiniti
• Factory Radio to Aftermarket Antenna Adapter
• select 1987-2024 vehicles from Nissan, Infiniti Vehicles
• Nissan diversity factory radio with 2-pin connector to aftermarket antenna
• Retains diversity functions
Fast 3-day shipping to
VA.
Delivers Apr. 1 - Apr. 8
• Factory Radio to Aftermarket Antenna Adapter
• select 1987-2024 vehicles from Nissan, Infiniti Vehicles
• Nissan diversity factory radio with 2-pin connector to aftermarket antenna
• Retains diversity functions
Install a new Single-DIN car stereo in select 2002-2006 Nissan Altima (Black)
• Single-DIN Dash Kit
• Painted scratch-resistant matte black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions
Fast 3-day shipping to
VA.
Delivers Apr. 1 - Apr. 8
• Single-DIN Dash Kit
• Painted scratch-resistant matte black
• High-Grade ABS plastic construction
• Original factory-like fit and finish
• Includes installation instructions
Reverse Wiring Harness for Select 1995-Up Nissan Vehicles Into OEM Radio
• Wiring Harness for Select 1995-Up Nissan Vehicles Into OEM Radio • Plugs into OEM Radio • Power/4 Speaker • Designed To Plug Into The Factory Radio • Can Be Used To Repair Damaged OEM Harness
• Wiring Harness for Select 1995-Up Nissan Vehicles Into OEM Radio • Plugs into OEM Radio • Power/4 Speaker • Designed To Plug Into The Factory Radio • Can Be Used To Repair Damaged OEM Harness
6.2" Double DIN Touchscreen DVD Multimedia Receiver with Bluetooth and Backup Camera
• Double DIN Bluetooth DVD Digital Multimedia Receiver
• 6.2" Touchscreen Display Display
• 3 sets of 2 volts preamp outputs
• 7-Band Equalizer with 5 Selectable Presets
• Wireless remote control included
• Includes universal Backup Camera
• Double DIN Bluetooth DVD Digital Multimedia Receiver
• 6.2" Touchscreen Display Display
• 3 sets of 2 volts preamp outputs
• 7-Band Equalizer with 5 Selectable Presets
• Wireless remote control included
• Includes universal Backup Camera
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto
• Double DIN Bluetooth Digital Multimedia Receiver
• 7" Capacitive Touchscreen Display Display
• Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 9-Band Equalizer with Digital Time Correction
• SiriusXM Satellite Radio Ready
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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 your 2003 Altima
Q: Can I upgrade the factory stereo system in my 2003 Nissan Altima?
A: Yes you can improve your sound in your Altima by upgrading your speakers and/or adding an amplifier. You may also be able to update the stereo and main display in your 2003 Altima if there is a dash kit and harness solution available.
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