Used Mercedes-Benz CLS Fuel Injector

These are different generations with different engine families, so a direct swap across that 2010–2011 boundary is very unlikely to work without modification. The engine code is the critical factor — even if two cars share the same displacement on paper, the injector specification is tied to the specific engine code, not the model year badge. Check your V5 or run a VIN check to confirm your engine code, then give that to the breaker so they can match it precisely. Never assume a part crosses a generation boundary without the breaker confirming it against your registration.

Trim and badge names don't determine injector fitment — the engine code does, and the 350 and 400 badges cover different engines with different fuelling requirements. Share your engine code with the breaker rather than just the badge, and they can tell you whether the injector specification matches. Do not assume two similarly badged cars share the same injector even within the same generation.

Yes, absolutely — petrol and diesel injectors are completely different components and are not interchangeable under any circumstances. Diesel CLS models use high-pressure common-rail injectors, while petrol models use lower-pressure port or direct fuel injectors depending on the engine. Always confirm your fuel type and engine code with the breaker before ordering, as fitting the wrong type would prevent the engine from running correctly.

The W218 received a facelift around 2014, but whether injector specifications changed across that facelift depends on the specific engine code rather than the facelift year itself. In many cases the same engine carried across unchanged, making injectors compatible, but ancillary and mounting changes can occur mid-production without being widely documented. Give the breaker both engine codes — yours and the donor car's — and ask them to confirm compatibility against your exact registration before you commit to buying.

Trim level itself doesn't determine injector fitment, but AMG models typically use a different engine entirely from the standard CLS — for example, a 63 AMG uses a different engine code to a standard 350 or 500 — so the injector specification will differ. The engine code is what matters, not the AMG badge or trim name. Confirm your engine code via your V5 or a VIN check and supply it to the breaker, who can source an injector matched to your exact engine rather than just the trim designation.

Mercedes-Benz diesel injectors in particular can require coding or calibration data to be programmed to the ECU after fitting, and this is something you should confirm with both the breaker and your fitting garage before purchasing. Whether a specific injector needs coding to your vehicle is not something that can be stated as a blanket rule here, as it depends on your engine and the age of the vehicle. Ask the breaker directly whether the injector they're supplying comes with calibration data, and make sure your garage is equipped to carry out any required coding.