Used Mercedes-Benz X-Class Fuel Injector

Yes, every X-Class variant has fuel injectors — the X-Class was sold exclusively with diesel engines in the UK (the 2.3-litre and 3.0-litre V6 diesel units), and all diesel engines use fuel injectors to deliver fuel directly into the combustion chamber under high pressure. There were no petrol or naturally aspirated variants offered in the UK, so diesel injectors are the only type relevant to this model.

The X-Class ran as a single generation from 2017 to 2020 with no significant facelift, so the production window is relatively tight. Fitment depends primarily on your engine code — the 2.3-litre units (OM626) and the 3.0-litre V6 (OM642) use different injectors that are not interchangeable with each other. Confirm the engine code from your V5 or a VIN check and supply it to the breaker, as injector specification can vary even within the same displacement across build dates.

No — trim level has no bearing whatsoever on fuel injector fitment; Progressive, Styleline, and Power Line are specification packages affecting interior, cosmetics, and equipment, not engine hardware. What determines the correct injector is your engine code, which will be the same across all trims sharing that engine. Give the breaker your engine code and registration, not your trim name.

Yes, the 3.0-litre V6 diesel (engine code OM642) uses entirely different injectors from the 2.3-litre four-cylinder diesel (OM626), and parts from one will not fit the other. The V6 was only available in the range-topping X350d Power Line variant, so if you have that model you must specifically source V6-compatible injectors. Always quote your engine code to the breaker to avoid being sent the wrong part.

The X-Class shares its underpinnings and some drivetrain components with the Nissan Navara (D23) and Renault Alaskan, and there is some parts commonality in the 2.3-litre diesel family. However, injector specifications can differ due to Mercedes-Benz engine tuning and emissions calibration, so you should not assume a Navara injector is a direct swap. Confirm cross-compatibility with the breaker by comparing exact engine codes and part numbers before purchasing.

Modern diesel injectors, including those on the X-Class, typically carry calibration data that may need to be programmed into the ECU for optimal fuelling and emissions performance, and a used injector from another vehicle may require coding with diagnostic equipment. Whether coding is required and how straightforward the process is for your specific build are things you should confirm with the breaker and your fitting garage before buying. This is an important practical and cost consideration that can affect the total price of the repair.