Cheap Mercedes-Benz Vito Catalytic Converter

This crosses a significant generation and emissions boundary: the W639 Vito ran until 2014, while the W447 Vito launched in 2015 with different engine families and stricter Euro 6 emissions requirements. The exhaust and emissions systems are not the same between these generations, so a W639 cat is very unlikely to fit a W447. Confirm the exact part against your registration with the breaker before ordering.

The 109 CDI and 111 CDI designations refer to different power outputs but are often built around the same underlying engine family within the same generation, meaning the cat may be shared — but the exhaust routing and emissions calibration can vary between outputs. Trim level makes no difference to cat fitment; what matters is the engine code, which you should confirm with the breaker against your registration to be certain.

Yes — petrol-engined Vito variants do carry a conventional three-way catalytic converter as part of their exhaust system, as all petrol engines require one to meet emissions standards. Diesel Vitos use an oxidation catalyst and typically a DPF rather than a traditional three-way cat, so make sure you and the breaker are clear on which type your vehicle needs. The exact specification will depend on your engine code and the emissions era your van was built to.

The W639 Vito ran from 2003 and received a notable update around 2010, with production continuing to around 2014 before the W447 replaced it; within the late W639 period, engine codes and emissions hardware can vary. Whether a cat from an earlier W639 crosses over to a later W639 depends on the specific engine code and emissions standard fitted, so name the generation confidently but route the cross-period interchange to the breaker. Always confirm the engine code on your V5C with the breaker before purchasing.

No — trim level, whether Sport, Tourer, Pro, or any other Vito trim designation, has no bearing on catalytic converter fitment. What determines the correct cat is your engine code, fuel type, and the emissions standard the van was built to, all of which you can find via your registration or V5C. A used cat sourced from a different trim level is perfectly acceptable provided the engine and emissions details match.

On diesel Vitos these are separate components: the diesel oxidation catalyst (DOC) and the diesel particulate filter (DPF) are distinct parts of the exhaust aftertreatment system, and a DPF warning light specifically points to the particulate filter rather than the catalyst. Confirming exactly which component has failed, and sourcing the correct replacement by engine code and emissions era, is essential — interchange of DPF and catalyst parts is strong confirm-with-the-breaker territory. Ask the breaker to match the part to your registration to ensure both fitment and MOT compliance.