Second Hand Mercedes-Benz Citan Catalytic Converter

Yes, petrol-engined Citan variants carry a catalytic converter as standard, and diesel variants have one integrated into or alongside the exhaust aftertreatment system (typically combined with or upstream of a DPF on Euro 5 and Euro 6 diesel engines). The Citan was sold in the UK predominantly with diesel engines, so most buyers will be dealing with a catalytic converter that forms part of a combined diesel aftertreatment assembly rather than a standalone petrol-style cat. Which exact component you need depends heavily on your engine code and emissions standard, so check your V5C and confirm with the breaker before ordering.

The W415 Citan ran from 2012 to 2021 with no significant mid-life platform change, but emissions legislation moved from Euro 5 to Euro 6 within that period, and the exhaust aftertreatment hardware changed accordingly. A cat from a Euro 5 vehicle is unlikely to be a direct swap onto a Euro 6 van, and fitting the wrong unit could cause an MOT failure. Name the generation to your breaker but always confirm the engine code and Euro standard of the donor vehicle matches yours before agreeing a purchase.

The W420 Citan launched in 2022 on an entirely new platform shared with the Renault Kangoo, replacing the older Mercedes-only W415 architecture, so parts from the two generations are not interchangeable. The W420 also introduced updated Euro 6d powertrains, meaning the exhaust aftertreatment layout changed again. Treat these as completely separate vehicles when sourcing a catalytic converter and always confirm the specific part number with your breaker against your registration.

Trim level and body style — whether you have the panel van, Mixto, or Tourer passenger version — do not determine which catalytic converter you need. Fitment is driven by engine code, fuel type, and emissions standard, not by the interior specification or badge on the side. When contacting a breaker, give them your engine code (found on your V5C or inside the engine bay) and your registration rather than your trim name, as that is what they will use to match the part.

Both years sit within the W415 generation, but 2015 models were typically Euro 5 while 2018 models were built to Euro 6 standards, and the exhaust aftertreatment systems differ between these emissions eras. Even if the units look similar, swapping across the Euro 5 / Euro 6 boundary can cause emissions-related fault codes and an MOT failure. Catalytic converter and DPF interchange is strong confirm-with-breaker territory — give your breaker both registrations and let them cross-reference the part numbers before committing.

The W415 Citan was based on a Mercedes-Benz platform rather than the Renault Kangoo architecture, so crossover of exhaust aftertreatment parts between these two vehicles is not straightforward and should not be assumed. The W420 Citan (2022 onwards) does share its platform with the Renault Kangoo, so there may be more crossover potential there, but this is exactly the kind of interchange that needs to be confirmed with your breaker against both vehicles' engine codes and part numbers. Never assume visual similarity means compatibility on emissions-critical components.