Used Alfa Romeo Giulia Catalytic Converter

Yes, all Alfa Romeo Giulia variants sold in the UK are fitted with a catalytic converter as part of the exhaust emissions system — this applies to both the petrol and diesel engines across the range. Petrol models use a traditional catalytic converter, while diesel models combine a catalytic converter with a diesel particulate filter (DPF) as part of the exhaust aftertreatment system. Every Giulia sold new in the UK had to meet at least Euro 6 emissions standards, so emissions equipment is present on all examples you're likely to find at a breaker.

The Alfa Romeo Giulia (Type 952) launched in the UK in 2016 and received a facelift around 2020, but the fundamental engine lineup — including the 2.0 petrol and 2.2 diesel units — carried across that boundary. That said, catalytic converter and DPF interchange specifics across model year boundaries are strong confirm-with-breaker territory, so you should give the breaker your exact registration and engine code rather than assuming a pre-facelift unit will swap straight in. The emissions certification of the specific part may differ even if the physical appearance is similar.

Yes, engine code is one of the most important factors — the 2.0 litre petrol (engine code 55273835 / GME family) and the 2.2 litre diesel (MultiJet II) have entirely different exhaust systems and their catalytic converters are not interchangeable. Diesel Giulias also have a DPF alongside the catalytic converter, so make sure you and the breaker are clear on exactly which component you need and from which drivetrain. Always quote your registration and engine code to the breaker to ensure the right part is pulled.

Trim level alone does not determine catalytic converter fitment — what matters is the engine code and fuel type, not whether the car is a Super, Speciale, or Veloce. The exception worth noting is the Giulia Quadrifoglio, which uses a different 2.9 litre twin-turbo V6 petrol engine and will have its own distinct exhaust system that is not shared with the four-cylinder models. Confirm your engine code with the breaker regardless of trim, and they will identify the correct unit from your registration.

No — petrol and diesel catalytic converters work on entirely different chemical principles and the exhaust systems are physically different, so a diesel unit cannot be used on a petrol car and vice versa. A diesel Giulia's aftertreatment system is also integrated with a DPF, making it a different assembly altogether. Fitting the wrong type would not only fail to work correctly but would almost certainly result in an MOT failure on emissions.

A used catalytic converter from the correct engine and emissions era should not cause MOT problems, but fitment from the wrong model year or emissions standard is a real risk — the Giulia is Euro 6 throughout its UK life, but variations within Euro 6 (6b, 6d-temp, 6d) mean a part from the wrong certification stage could fall short on the emissions test. This is exactly why catalytic converter interchange specifics are best confirmed directly with the breaker against your registration, rather than assumed from year alone. Ask the breaker to confirm the donor vehicle's registration so you can cross-check the emissions approval if needed.