Peugeot 406 Catalytic Converter Replacement Parts
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What to check when buying a used Peugeot 406 catalytic converter
A used catalytic converter that fits one vehicle won't always fit another - even within the same model range. These questions help breakers match stock to your exact vehicle before they quote:
- State whether it's petrol or diesel
- State the engine code if known
Other used Peugeot 406 parts
- Used Peugeot 406 Exhaust System
- Used Peugeot 406 Lambda Sensor
- Used Peugeot 406 DPF
- Used Peugeot 406 EGR Valve
- Used Peugeot 406 Bonnet
- Used Peugeot 406 Brake Servo
- Used Peugeot 406 Subframe
- Used Peugeot 406 Differential
- Used Peugeot 406 Camshaft
- Used Peugeot 406 ECU
- Used Peugeot 406 Window Winder Motor
- Used Peugeot 406 Rear Light
Used catalytic converter for other Peugeot models
Fitment questions
Does a catalytic converter from a Peugeot 406 petrol fit all petrol variants of the 406?
The 406 was produced from 1995 to 2004 and was offered with several petrol engine options, each with its own engine code, so the cat that fits a 1.8 will not necessarily fit a 2.0 or a 3.0 V6. When sourcing a used cat, always match on engine code rather than just fuel type or year. Confirm the exact engine code against your registration with the breaker before purchasing.
Does the 406 even have a catalytic converter, and which versions have one?
Yes, all petrol-engined Peugeot 406s were fitted with a catalytic converter as standard, as petrol cats became mandatory on new UK cars from 1993. Diesel 406s used oxidation catalysts as part of their exhaust system too, though the diesel setup differs significantly from the petrol one. If you are unsure which type of exhaust treatment system your specific 406 has, confirm with the breaker quoting your registration.
Will a catalytic converter from an early 406 (1995-1999) fit a facelifted 406 (1999-2004)?
The Peugeot 406 received a significant facelift in 1999, and while some mechanical components carry across, exhaust system parts including the catalytic converter can differ between the pre-facelift and post-facelift cars even on the same engine code. The safest approach is to match the engine code exactly and confirm with the breaker whether the specific part crosses that 1999 boundary for your engine.
Does the trim level affect which catalytic converter I need for my 406 - for example, does an LX differ from an SRi or a V6?
Trim level itself - whether LX, GLX, SRi, ST, or Executive - does not determine which catalytic converter is fitted; what matters is the engine code and fuel type. The exception is the 3.0 V6, which has its own distinct exhaust system by virtue of being a different engine entirely, not because of its trim designation. Always match on engine code, and confirm the specific part with the breaker against your registration.
Can I use a diesel catalytic converter from a 406 HDi on my older non-HDi diesel 406?
The 406 was sold with both the older XUD-based and later HDi common-rail diesel engines, and these are sufficiently different that their exhaust treatment components are not straightforwardly interchangeable. Diesel catalyst interchange is strong confirm-with-breaker territory - quote your exact engine code and registration to the breaker before agreeing to buy.
Will a 406 catalytic converter pass an MOT if it came from a different year car?
For an MOT emissions test, the catalytic converter must be appropriate for the engine it is fitted to and must perform to the standard required for that vehicle's registration date. A cat from the wrong engine variant or emissions era may cause an MOT failure even if it physically fits the system. Confirm with the breaker that the donor vehicle's engine code matches yours, and if in doubt consult your MOT tester before fitting a used cat.