Mercedes S-Class Catalytic Converter

The catalytic converter in a Mercedes S-Class transforms harmful exhaust gases such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) into less harmful substances like carbon dioxide (CO₂), water (H₂O), and nitrogen (N₂). It operates through chemical reactions of oxidation and reduction, using precious metals like platinum, palladium, and rhodium to reduce vehicle emissions and comply with environmental standards.

Alongside the catalytic converter, the Mercedes S-Class exhaust system may include the following components:

• Pre-catalytic converter: Filters initial exhaust gases and is positioned near the engine.
• Diesel Particulate Filter (DPF): Traps fine particulate matter on diesel models.
• Selective Catalytic Reduction (SCR) system: Reduces NOx emissions in diesel engines using AdBlue fluid.
• Oxygen sensors (lambda sensors): Monitor oxygen levels before and after the catalytic converter to optimize combustion and detect faults.

Modern Mercedes S-Class models, such as the W222 and W223 series, can have up to 4 catalytic converters. This setup typically includes separate catalytic converters for different cylinder banks and pre-catalytic converters to ensure compliance with strict Euro 6 emission standards.

Signs of a failing catalytic converter include:

• Reduced engine power and acceleration.
• Increased fuel consumption.
• Strong sulfur or gasoline odors from the exhaust.
• Illuminated engine warning light on the dashboard.
• The vehicle entering limp or degraded mode for engine protection.

These symptoms result from clogging, contamination, faulty oxygen sensors, or improper fuel mixtures.

Maintenance involves using quality fuel, avoiding prolonged low-temperature driving, and ensuring oxygen sensors are functioning properly. Replacement of the catalytic converter should be done entirely when defective to prevent engine damage or limp mode activation.

• Replacement cost is high due to precious metals involved, often between 2000 and 3000 EUR for genuine parts.
• Always use parts compliant with manufacturer specifications and legal emissions standards.
• Never remove or bypass the catalytic converter as this is illegal and harmful to the environment.

Mercedes S-Class catalytic converters use a honeycomb structure coated with rare and precious metals:

• Platinum and palladium for oxidizing carbon monoxide and hydrocarbons.
• Rhodium for reducing nitrogen oxides (NOx).

This combination allows efficient conversion of toxic gases into less harmful emissions while withstanding high temperatures (around 420°C).

Krosfou offers brand-new, high-performance catalytic converters manufactured in Europe with advanced technology and stainless steel construction, matching or exceeding OEM standards. They provide a 3-year warranty and comply with current regulations, making them suitable replacements for Mercedes S-Class models requiring reliable and durable emission control components.

• Certified by TÜV SÜD Automotive GmbH for superior technical quality.
• Manufactured with high-quality monoliths and rare metal coatings for longevity and performance.
• Available for many Mercedes S-Class engine types and Euro 6 emission standards compliance.

Krosfou offers fast shipping with options ranging from standard delivery within Europe to express international shipping. Orders placed before noon for in-stock products are dispatched the same day. They provide free returns within 30 days for unused items in original packaging and a comprehensive 3-year warranty on catalytic converters, ensuring buyer confidence.

• Standard delivery in Europe: 1 to 6 working days, free for orders over €189 excluding bulky items.
• Express delivery options available via UPS or DHL for quicker receipt.
• Customer support available for order tracking and technical assistance.

Professional customers can also benefit from tiered discounts, loyalty points, and direct factory support.