Exhaust Pipe Peugeot 406 (1995-2004)

The exhaust pipe is a vital metal tube that forms part of the Peugeot 406’s exhaust system. It connects the exhaust manifold to the silencer or catalytic converter. Its main role is to evacuate combustion gases such as carbon monoxide, hydrocarbons, and nitrogen oxides safely away from the engine and the vehicle’s interior. It stabilizes pressure, reduces noise and vibrations, and helps oxidize pollutants. Proper exhaust pipe function also optimizes engine performance by maintaining ideal back pressure.

The exhaust process begins at the exhaust manifold, attached to the engine head, collecting hot gases from engine valves and directing them backward. The gases then pass through components in sequence:

• Intermediate pipes that channel the gas flow
• The catalytic converter, which filters harmful emissions
• The silencer, reducing noise and stabilizing pressure

Lambda sensors measure oxygen levels to adjust air/fuel mixture via the engine control unit (ECU). This system prevents gas entry into the cabin and optimizes fuel combustion by directing the heat away towards the back.

The Peugeot 406 exhaust pipe system includes:

• Exhaust manifold: Collects gases from engine cylinders and reduces initial noise
• Exhaust pipes: Specially shaped tubes, usually stainless steel or aluminum, linking components and resisting corrosion and heat
• Flexible pipe: A metal braid or corrugated tube that absorbs vibrations between the manifold and catalytic converter
• Fittings and rubber mounts: Connect and cushion pipes, reducing noise and vibration
• Resonators or pressure stabilizers: Regulate pressure upstream

These parts work together to ensure the exhaust system’s durability, noise reduction, and gas flow efficiency.

Peugeot 406 exhaust systems can vary by design and purpose :

• Single pipes: Single tube for standard gas flow
• Dual pipes: Two pipes to improve flow, engine power, and torque
• Advanced aftermarket options: Maximize gas flow for improved performance (note: tuning/performance-oriented pipes are not offered by Krosfou)
• Multiple outlet designs: For aesthetic or multi-cylinder applications

These systems often incorporate advanced filtration such as particulate filters (DPF) and catalytic converters to meet emission standards.

Exhaust pipes for the Peugeot 406 are typically made from high-quality stainless steel (INOX 409), aluminum, or steel alloys. These materials are chosen for their:

• Resistance to high temperatures exceeding 800°C
• Corrosion resistance against acidic gases
• Ability to withstand road vibrations and mechanical stresses

Krosfou products are manufactured in Europe using 2025-grade technology, ensuring durability and compliance with stringent quality standards.

Typical issues include:

• Corrosion leading to holes and leaks causing abnormal noise and loss of power
• Worn flexible pipes or mounts causing vibrations
• Excessive soot buildup affecting emissions and performance

Maintenance recommendations :

• Regular visual inspection for rust, holes, and damage
• Listening for unusual noises indicating leaks
• Replacing worn parts promptly, including gaskets, sensors, and seals
• Periodic cleaning and ensuring the catalytic converter and DPF are functioning correctly

Adhering to these practices helps maintain your Peugeot 406's emission compliance, safety, and engine performance.

Krosfou offers new, high-quality exhaust pipes, catalytic converters, and Diesel Particulate Filters (DPFs) made with European manufacturing standards. Key benefits include:

• Manufactured from durable INOX 409 stainless steel with advanced ceramic monoliths
• Certified quality by TÜV SÜD Automotive GmbH, meeting or exceeding original equipment standards
• 3-year warranty covering use up to 100,000 km
• Direct-from-factory sales ensuring competitive pricing and fast delivery
• Free returns within 30 days for unused, original condition parts

Choosing Krosfou ensures your Peugeot 406 exhaust system parts meet emission regulations and provide reliable, long-lasting performance.

To secure the proper fitment of an exhaust pipe for your Peugeot 406, consider the following :

• Specify your exact model, engine type (e.g., HDi diesel), and year of manufacture (e.g., 1999-2004 sedan/estate)
• Confirm compatibility by VIN or OEM part numbers with the supplier prior to purchase
• Replace associated gaskets, sensors (oxygen sensors/lambda sensors), and mounts during installation to ensure sealing and performance
• Have the installation performed by a professional garage or assembly center specializing in exhaust systems

Following these guidelines helps maintain exhaust system function, emission compliance, and overall vehicle safety.