Air Mass Sensor 5Pin Oval Plug (M272 273) (Mercedes-Benz C-Class W203 / W204 / M-Class W164 / Sprinter / Viano/Vito W639) is a sensor designed to measure the amount of air entering the engine. This critical data helps the engine’s control unit regulate fuel injection for optimal combustion. The sensor’s 5-pin oval plug design matches vehicles equipped with Mercedes-Benz M272 and M273 engines across various models, including C-Class and M-Class ranges, as well as certain Sprinter and Viano/Vito variants.
This type of air mass sensor plays a vital role in efficient engine management by ensuring that the air-fuel mixture is balanced. When comparing, confirm the plug style and pin configuration to ensure compatibility with your vehicle’s engine type. The unit is specifically intended for use on Mercedes-Benz vehicles noted in the product title, helping you narrow down compatibility by model and engine codes rather than generic fitment.
When selecting this sensor, verify the plug’s oval shape and five-pin layout against your existing part. This sensor requires no coding or calibration claims by the listing, so any diagnostics or adjustments beyond simple replacement might necessitate specialist intervention. If uncertain about fit or function, consultation with the sales desk or submitting a request through the parts inquiry service can help confirm your exact requirements.
Need help matching this item to your vehicle? Use Vehicle Parts Finder, Request a Part or Platinum Sales Desk with your VIN, engine number, part number or clear photos.