Alpine KTX-M38 Restyle Dash and Wiring Kit

Install and connect an Alpine GPS receiver with an 8" screen in select 2010-up Mazda 3 models — retains steering wheel controls and Bluetooth®

Item #: 500M38

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Keep your factory look and controls

This Restyle package lets you install an oversized Alpine receiver with an 8" touchscreen while keeping your factory look. The package contains a dash adapter that's been specially designed to make the Alpine's big 8" screen look right at home in your Mazda 3.

Plug it in and go

You'll need to hardwire your new Alpine to the car's parking brake and foot brake. Once that's done, the two included wiring adapters plug directly from the Alpine receiver into your vehicle's factory wiring harnesses — no extra splicing or soldering needed. You can retain your factory Bluetooth®, your factory backup camera, and the factory multi-functional display (MFD) if equipped. The package also includes a steering wheel audio control interface — no programming necessary, just plug it in and go. Warranty: 1 year.

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.

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Hands-on research

What's in the box?

Download owner's manual

  • Radio housing
  • Radio replacement interface module
  • Vehicle harness (attached to interface module)
  • 2 Mounting brackets
  • 2 Large screws
  • 2 Small screws
  • Antenna adapter
  • Instructions

Product Research


Perfect F.I.T. Installation Package: BThe Alpine in-dash navigation receivers with an 8" LCD touchscreen will not fit a standard Single-DIN or Double-DIN dash opening. To accommodate this large screen in your vehicle's dash, Alpine offers a line of Perfect Factory Integration Technology (F.I.T.) packages specifically for these receivers. Alpine's Perfect F.I.T. installation packages allow the Alpine navigation receiver with 8" LCD touchscreen to fit seamlessly into select vehicle dashes. Perfect F.I.T. is designed to cosmetically match the shape, color and texture of the vehicle's interior. 

Vehicle Compatibility: The Alpine KTX-M38 Perfect F.I.T. installation package allows seamless integration of the Alpine 8" LCD touchscreen navigation head unit in select 2010-up Mazda 3 vehicles. As always, please consult Crutchfield's Outfit My Car to verify fit with your vehicle.

OEM-Like Appearance: The KTX-M38 Perfect F.I.T. installation package has been specifically fitted and engineered to fit select 2010-up Mazda 3 vehicles perfectly. It comes with a specially formed OEM-grade, high quality/high strength ABS plastic radio housing that is color matched to the dash. This allows the unit to precisely fit not only the vehicle, but also the Alpine 8" LCD touchscreen navigation receiver. In addition, extra care is taken to match the factory dash's shape, texture, and color ensuring a more OEM-like appearance. Unlike traditional universal dash kits, the Alpine Perfect F.I.T. packages include direct fit OEM-like brackets to ensure sturdy support and accurate positioning of the radio in your vehicle's dash.

Vehicle+Radio Harness: This Perfect F.I.T. installation package comes with a radio replacement interface and vehicle+radio harness for simple installation between the Alpine 8" LCD touchscreen receiver and your 2010-up Mazda 3. You get all the necessary harnesses and adapters in the box to install the Alpine 8" LCD touchscreen navigation receiver in your vehicle. The vehicle+radio harness contains a large Molex connector which plugs into your Mazda 3's factory radio harness. On the other end of the harness are 16-pin and 24-pin connectors which plug into the the back of the Alpine 8" LCD touchscreen navigation receiver. In addition, you will need to make two hardwired connections between the supplied vehicle+radio harness and your vehicle's Parking brake (Yellow/blue) and Foot brake (Yellow/black).

Retained Factory Features: For 2010-up Mazda 3 vehicles with factory steering wheel audio controls, the KTX-M38 retains the capability to control the Alpine 8" LCD touchscreen navigation receiver's volume, source, and playback controls through the factory steering wheel controls. There is no additional programming required, simply plug & play. The KTX-M38 will also retain your vehicle's factory back-up camera. If your Mazda 3 is equipped with a factory Multi-Function Display (MFD) it will remain fully functional. In addition, factory Bluetooth is retained.

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