Mercedes SLK-Class Catalytic Converter R171 (2004-2011)

The catalytic converter for Mercedes SLK-Class R171 is a three-way catalytic converter designed to reduce harmful emissions and comply with Euro 4 (D4) emission standards. It measures approximately 600 mm in length and weighs around 3.8 kg. It is made using high-quality materials for durability and performance.

This catalytic converter fits several engine variants of the SLK R171 including:

• SLK 200 Kompressor (4-cylinder, 1796 cc)
• SLK 350 (V6 3.5L, 272 to 305 hp, model years 2008-2011)

Always check fitment specifics based on engine displacement and model year to ensure proper compatibility.

The Mercedes SLK R171 (2004-2011) incorporates advanced engine technologies to reduce emissions and improve efficiency:

• The SLK 200 Kompressor features the TWINPULSE system combining a supercharger, balance shafts, an intercooler, variable camshafts, and four-valve technology.
• This system achieves about an 8% reduction in fuel consumption compared to previous engine versions.

These innovations help the catalytic converter effectively reduce exhaust emissions while maintaining engine performance.

Krosfou catalytic converters are manufactured in Europe using high-grade INOX 409 stainless steel and feature high-quality ceramic monoliths with rare metal thin-layer coatings. These materials ensure exceptional durability, high performance, and compliance with stringent European emission standards.

• Stainless steel body for corrosion resistance
• Advanced ceramic substrates for optimal catalytic conversion
• Rare metals coating for enhanced catalytic efficiency

This construction results in a durable exhaust product that can sometimes add slight horsepower benefits to the vehicle.

Signs of a bad catalytic converter include:

• Check engine light illumination related to emissions or oxygen sensors
• Reduced engine performance or power loss
• Unusual exhaust smells or noises
• Failed emissions test or elevated exhaust gases

If you experience these symptoms, a professional diagnostic including sensor checks and exhaust system inspection is recommended to determine if the catalytic converter requires replacement.

Krosfou catalytic converters come with a 3-year warranty limited to 100,000 kilometers of use from the date of receipt. All products are manufactured in Europe, certified by TÜV SÜD Automotive GmbH for superior or equal quality to original parts, and comply with European regulations including E24-103R approval. They feature robust stainless steel construction and high-performance monoliths to ensure reliability and longevity.

• 3-year warranty with usage limits
• European manufacturing and certifications
• High-grade materials: INOX 409 stainless steel and ceramic monoliths

Professional installation and adherence to technical guidelines such as sensor replacement and correct engine compatibility are required to maintain warranty coverage.

Krosfou catalytic converters are specifically designed for proper fit, function, and emission standards of targeted vehicle models. For the Mercedes SLK-Class R171, the converters are tailored to fit the listed SLK models and engines precisely. They are not universal and should not be used in vehicles from other brands or unrelated models like BMW or other classes without verification.

• Krosfou converters ensure exact fitment and legal compliance
• Vehicle-specific design avoids installation issues and sensor errors
• Professional confirmation of fit via VIN or reference number is available

Do not rely on universal catalytic converters to avoid emissions compliance and engine management issues.

When replacing the catalytic converter:

• Replace the oxygen sensors alongside the catalytic converter after 80,000 to 100,000 km.
• Ensure the vehicle runs only on unleaded petrol since the catalytic converter is designed for such fuel.
• Use copper connections if fitting a connection pipe before the catalytic converter and always check for exhaust system tightness.
• Choose a catalytic converter matched to your engine displacement for legal and functional compliance.
• Professional installation is recommended to maintain warranty and ensure correct sensor placement.

Maintaining proper engine health, regular oil and spark plug changes, and avoiding short trips that prevent engine temperature reaching operational levels help extend catalytic converter life and support emission control systems effectively.