Used Nissan Navara Catalytic Converter

Yes, but only on petrol-engined Navaras — and in the UK, the overwhelming majority of Navaras sold were diesel, meaning most UK examples do not have a traditional catalytic converter in the sense petrol owners expect. Diesel Navaras use a diesel oxidation catalyst (DOC) as part of the exhaust aftertreatment system, which is a different item to a petrol cat, and later diesel models (broadly from Euro 5 onwards, around 2011) also added a diesel particulate filter (DPF) into the system. If your Navara is diesel and you are looking for the catalytic element of your exhaust system, confirm with your breaker whether you need the DOC, the DPF, or both, as these are often quoted and supplied separately.

The D40 and D23 are completely different generations with different engines, different exhaust layouts, and different emissions standards, so parts are not interchangeable between them. The D40 ran primarily with a 2.5 dCi diesel engine and predates the tighter Euro 6 rules that the D23's 2.3 dCi twin-turbo unit was built around, meaning the aftertreatment systems are engineered differently. Always confirm with the breaker using your registration plate to make sure any diesel oxidation catalyst or DPF assembly matches your exact generation and engine.

The D40 generation ran from 2005 to 2015, but emissions standards tightened during that period, with Euro 5 requirements coming into force for new vehicles from around 2011, which can affect exhaust aftertreatment specifications. Parts from the earlier Euro 4 era of the D40 may not match the later Euro 5 versions even though the generation name is the same. This is strong confirm-with-breaker territory — give the breaker your registration so they can check the exact engine code and emissions spec before supplying a part.

Trim level does not affect which exhaust aftertreatment components fit your Navara — the DOC and DPF are determined entirely by the engine code, fuel type, and the emissions era the vehicle was built to, not by whether the truck is a Visia, Acenta, or Tekna. You may find cosmetic differences in how accessible or finished the underside looks between specs, but the mechanical exhaust components will follow the engine and build year. Focus on confirming the engine code and registration with the breaker rather than the trim name.

Give the breaker your full registration plate first, then confirm the engine code (the 2.5 dCi in the D40 was used across several variants and the code helps pin down the exact spec), the fuel type, and whether your vehicle has a DPF fitted — not all D40s of that era were DPF-equipped as standard and some were retrofitted. Whether you need just the diesel oxidation catalyst, just the DPF, or a combined assembly is something the breaker needs to confirm against your specific vehicle. Interchange specifics for these components vary enough that the registration check is essential before agreeing a purchase.

Using a component from a different engine variant or emissions era is risky and could cause your Navara to fail its MOT emissions test, even if the part physically bolts into place. The MOT now includes a DPF check, and a mismatched or incorrect aftertreatment component that does not meet your vehicle's original emissions standard is likely to be flagged. Always confirm the exact compatibility with the breaker using your registration, and if in any doubt, ask the breaker to verify the part number or original vehicle spec before buying.