Peugeot 306 Catalytic Converter

A catalytic converter in the Peugeot 306 transforms toxic exhaust gases into less harmful compounds such as water (H₂O), carbon dioxide (CO₂), and nitrogen (N) through chemical redox and oxidation reactions. It uses precious metals like platinum, palladium, and rhodium on a ceramic monolith to catalyze these reactions, correcting excess hydrocarbons, carbon monoxide, and nitrogen oxides from the engine's imperfect air-fuel mixture. The optimal operating temperature is around 420°C, which is why it is placed close to the engine for rapid activation.

On the Peugeot 306, the catalytic converter is positioned on the exhaust line after the exhaust manifold and before the front silencer. It is often paired with a lambda sensor, placed before or after, which measures oxygen levels to help the engine control unit adjust fuel injection.

There are multiple types designed for different needs and positions:

• Classic – mounted under the vehicle.
• Adapted to the exhaust manifold for high temperatures.
• Integrated in the exhaust manifold.
• Close-coupled – a newer type fused with the bent pipe for maximum heat retention.

Each type suits specific engine models and complies with pollution standards like Euro 2 and Euro 3 mostly for the Peugeot 306 range from 1993 to 2002.

Signs of failure include:

• Opaque smoke from the exhaust.
• Metallic noises or vibrations under the vehicle floor.
• Power loss and frequent engine stalling.

The causes often involve hardened sealing material upstream, monolith melting due to excess fuel, or clogging that blocks precious metals inside.

Yes, replacement is accessible for DIY to avoid high labor costs. The typical process includes:

• Disconnecting the lambda sensor and other sensors.
• Removing rusted clamps and fixings using lubricant like WD-40.
• Replacing metal gaskets (recommended though reusable).
• Installing the new catalytic converter and tightening clamps.
• Clearing any error codes from the engine control unit with an OBD tool to turn off warning lights.

Detailed illustrated manuals and videos are available in English and French for Peugeot 306 catalytic converter replacement.

Alternatives include:

• Cleaning or decarbonizing the catalytic converter, especially for petrol engines like the 1.8 110hp variant, to reduce pollution without replacing the part.
• De-catting diesel HDi models by removing the catalytic converter to increase power though this is illegal and raises emissions.

These options should be considered carefully depending on your vehicle type and legal regulations in your area.

Catalytic converters contain precious metals such as platinum, palladium, and rhodium that catalyze chemical reactions to reduce auto exhaust pollution. These metals have significant intrinsic value, and the catalytic converter's quality and compatibility with specific engine types like Peugeot 306's 1.4 to 2.0 gasoline or HDi diesel confer their price and performance characteristics.

The price for a new Peugeot 306 catalytic converter ranges roughly from 109 to 337 euros depending on brand, specifications like length (around 460 mm), weight (~4.5 kg), and compliance with Euro emission standards. Our high-quality automotive catalytic converters are manufactured in Europe under strict standards with inox 409 stainless steel and premium ceramic monoliths coated with rare metals for best engine compatibility and durability.

We provide a 3-year warranty limited to 100,000 km usage for all catalytic converters, alongside free returns within 30 days if the parts remain unused and in original condition. Fast delivery options are available across Europe and internationally, ensuring you get the right quality catalytic converter for your Peugeot 306 with confidence.