Description
Catalytic Converter For CITROEN C1 And PEUGEOT 107 With 1.0i 50 kW Engine. Exhaust Manifold With Integrated Catalytic Converter. Removed From A Vehicle With 48,000 Km.
Product Overview
This genuine used catalytic converter with integrated exhaust manifold is a direct-fit solution for Citroën C1 and Peugeot 107 models equipped with the 1.0i (engine code 1KR) 50 kW petrol engine. The unit is ideal for mechanics and DIY enthusiasts looking to restore exhaust performance and emissions compliance on early-generation city cars. Common search terms include catalytic converter 0342L3, 1608916280, and 1688263080 — include these product codes when looking for matching parts.
Why This Part Matters
The catalytic converter reduces harmful exhaust emissions by converting CO, HC and NOx into less harmful gases. Because this unit is integrated with the exhaust manifold, it also forms part of the cylinder head outlet and directly affects exhaust flow, backpressure and engine efficiency. A failing or clogged converter will reduce engine power, raise fuel consumption and often trigger a Check Engine Light (commonly emission-related fault codes such as P0420 or lambda sensor warnings).
Technical Information
Manufacturer: Stellantis / Citroën / Peugeot
Model: Citroën C1, Peugeot 107 (1.0i, Engine Code 1KR, 50 kW)
Product Codes: 0342L3, 1608916280, 1688263080
Other Numbers: 1.0i, 1KR, 50 kW
Condition Note: Used, removed from a vehicle with approximately 48,000 km
Fitment And Replacement Notes
Fitment: Direct replacement for models listed above that use the integrated manifold-catalyst assembly. Always match the product codes to the vehicle’s manifold/catalyst number to ensure correct fitment.
Replacement Steps (Summary For Professionals And Experienced DIYers): Lift the vehicle and secure on axle stands. Disconnect the battery and allow the exhaust to cool. Remove oxygen sensor(s) and any heat shields. Unbolt the manifold from the cylinder head and from the downpipe, supporting the assembly to avoid stress on studs and gaskets. Replace exhaust gaskets and any corroded fasteners. Refit in reverse order and re-torque bolts according to manufacturer specifications. Check and, if necessary, replace the oxygen sensor(s) to avoid false emission readings.
Installation Recommendations
Use New Gaskets: Always install new exhaust manifold and downpipe gaskets to prevent leaks. Inspect Studs And Bolts: Replace heavily corroded studs or bolts rather than risk breakage during removal. Oxygen Sensor Check: Test the upstream and downstream O2 sensors; a faulty sensor can cause a good catalytic converter to trigger fault codes. Professional Tools: For a professional and reliable job, use proper torque tools and penetrant for seized fasteners. Observe Exhaust Alignment: Ensure no undue strain is placed on the unit after installation to avoid premature cracking or leaks.
Common Failure Causes
Catalytic converters typically fail or become compromised due to several causes: engine misfires or rich-running conditions that overheat and melt the catalyst, contamination from oil or coolant leaks that clog the catalyst substrate, physical damage from road impacts, and long-term corrosion in salted-road environments. Integrated manifold units are also prone to gasket leaks at the cylinder head flange if fasteners loosen or corrode.
Symptoms Of A Failing Unit
Look for Reduced Engine Performance, Increased Fuel Consumption, Rattling Noises From The Converter (indicating a damaged substrate), Persistent Emission-Related Warning Lights, And Visible Exhaust Leaks Or Soot Around The Manifold Flange.
Service Life And Practical Advice
Service Life: While catalytic converters are designed to last many years, actual lifespan depends on engine health and operating conditions. A converter removed at 48,000 km may still offer long service life if the engine was well maintained and free of oil or coolant contamination.
Practical Tip: If Replacing The Converter Due To A Fault Code, Diagnose And Fix The Underlying Cause (Ignition, Fueling, Oil/Coolant Leaks) Before Installing The Replacement Unit To Prevent Repeat Failure.
