Description
Catalytic converter for CITROEN and PEUGEOT vehicles with 1.4 VTi and 1.6 VTi engines. From a vehicle with genuine 78,000 km mileage.
Product Overview
Used OEM catalytic converter removed from a Stellantis vehicle and suitable for petrol engines 1.4 VTi and 1.6 VTi. This unit restores exhaust flow and emissions control when the original converter is clogged, physically damaged or failing due to contamination. Ideal for professional workshops and experienced DIY mechanics who search by part code (K485 0341P9) when replacing exhaust components.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model(s): Citroën C3 Picasso; Citroën C4 II; Peugeot 308
- Product Codes: K485 0341P9
- Other Numbers: Vehicle Mileage 78,000 km
Compatibility & Fitment
Designed for petrol applications using the 1.4 VTi and 1.6 VTi engines found in the listed models. Compatibility should be checked against the vehicle’s engine type and exhaust layout — this part is commonly located in the front section of the exhaust system, directly after the exhaust manifold or downpipe. Often searched using the OE code K485 0341P9.
Installation Recommendations
General replacement steps: safely raise and support the vehicle, allow the exhaust to cool, remove any heat shields, disconnect upstream and downstream oxygen sensors, unbolt or cut the old joins (penetrating oil and heat may be required on seized bolts), fit the replacement converter with correct gaskets and clamps, reinstall oxygen sensors, and torque all fasteners to manufacturer values. Replace exhaust gaskets and, if the downstream O2 sensor shows contamination or fault codes, consider replacing the sensor at the same time. After installation, verify there are no exhaust leaks and clear any stored fault codes.
Why Catalytic Converters Fail
- Clogging from carbon deposits caused by rich running or long-term oil consumption.
- Overheating due to misfires or ignition/fuel system faults, which can melt the internal substrate.
- Contamination from engine oil or coolant leaks entering the exhaust stream.
- Physical damage from impact or corrosion to the housing and internal structure.
- Age and thermal fatigue — converters can last well over 100,000 km but may fail earlier if underlying engine issues are present.
Practical Tips
Before replacing the catalytic converter, diagnose and fix any root causes (misfires, oil consumption, coolant leaks, faulty sensors) to avoid premature failure of the new unit. If bolts are seized, heat carefully and use penetrating oil; in extreme cases cutting and welding may be required, but avoid excessive heat at the catalyst substrate. Always reuse correct torque values and replace gaskets/clamps to ensure a gas-tight connection.
Purchase Notes
This is a used genuine part removed from a vehicle with 78,000 km. It is frequently searched by the code K485 0341P9 — use that code when looking up compatibility. Suitable for professional mechanics and confident DIYers who can perform exhaust work or have access to a workshop.
