Complete stereo upgrade fitting kit to install a Double DIN aftermarket car stereo head unit and retain the use of the steering wheel audio controls in Mercedes C-Class W204 (2007-2011) car models.
This complete head unit fitting kit includes:
PLEASE NOTE: This fitting kit is suitable for cars without PDC and optional extra buttons below the original radio
FOR UNBRANDED/ CHINESE HEAD UNITS YOU WILL REQUIRE A DEDICATED 49-000 PATCH LEAD
Upgrade your Mercedes C-Class W204 (2007–2011) with an aftermarket car stereo or head unit using the InCarTec FK-921-1 Double DIN fitting kit with switches. Designed for seamless integration, this car audio installation kit allows a professional-quality stereo upgrade while retaining the correct dashboard layout and factory-style switch positioning.
Specifically engineered for Mercedes W204 models, this kit provides the necessary fascia and installation components required to install a modern Double DIN stereo system. Perfect for upgrading to Apple CarPlay, Android Auto, Bluetooth, DAB or touchscreen multimedia car stereos while maintaining a factory-look finish.
Ideal for car audio installers and enthusiasts alike, this InCarTec fitting kit ensures a secure and tidy stereo installation without dashboard modification when used with compatible interfaces and accessories.
PLEASE NOTE: This fitting kit is suitable for cars without PDC and optional extra buttons below the original radio

This complete head unit fitting kit includes:
Double Fakra antenna adapter (21-139)
Double moulded Fakra Aerial adapter cable for European cars that have amplified original antennas. Use with cars that have twin antenna both requiring power.
Mercedes Steering wheel control Interface (49-MB-04)
This CANbus interface will allow you to retain the audio steering wheel controls (including phone button) when installing an after market head unit. The CANbus interface will also give out CAN ignition, speed pulse, reverse gear and hand brake signals. For Mercedes cars with the newer steering control protocol only.
Universal 49-Series Steering wheel control patch lead (49-025)
Universal patch lead to be used with In car Tec 49 series steering wheel control interfaces. Use for Alpine, Clarion, JVC, Kenwood, Pioneer and Sony head units.
FOR UNBRANDED/ CHINESE HEAD UNITS YOU WILL REQUIRE A DEDICATED 49-000 PATCH LEAD
Mercedes C-Class W204 (2007-2011) with Switch Double DIN fascia (50-921/1)
Upgrade your Mercedes C‑Class W204 (2007‑2011) infotainment system with this high‑quality Double DIN fascia panel in matt black. Specifically engineered to allow the seamless installation of a larger aftermarket head unit, this fascia replicates the original OEM design to maintain the dashboard’s aesthetic integrity. The included side‑fixing brackets attach directly to your new stereo and fascia panel, giving a secure fit and professional finish without the need for additional installation cages.
This fascia fits Mercedes C‑Class W204 vehicles with factory buttons or optional extras located beneath the original radio. Its matt black finish complements the standard interior and retains a factory‑fitted look even with upgraded audio equipment. Fitment instructions are included to assist during installation, making it ideal for DIY enthusiasts and professional installers alike.
Compatible with the following Mercedes car models:
PLEASE NOTE: This fascia is suitable for cars with PDC or optional extra buttons below the original radio

This fitting kit is often Purchased With:
Brand: InCarTec
Car models: The years stated refer to the model's years of manufacture, please check the item description for information about any changes there may be within these productions years.
Mercedes - C-Class (3rd Gen) W204 (2007 - 2011)
© Copyright 2026 InCarTec. All Rights Reserved