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

The catalytic converter for the Mercedes SLK R171 fits various engine models and production years from 2004 to 2011, covering the first generation of the R171 roadster. It is suitable for:

• SLK 200 with a 1.8L petrol engine
• SLK 300 (171.454) with 231 hp
• SLK 350 (171.456) equipped with the M272 E35 engine

This compatibility makes it an ideal replacement part for owners of these SLK variants.

The SLK R171 catalytic converter features a 3-way catalytic converter combined with a Lambda oxygen sensor. This setup ensures efficient regulation and reduction of harmful exhaust emissions by converting toxic gases into less damaging substances, thus supporting both vehicle performance and environmental standards.

Yes, these catalytic converters comply with strict European regulations and certifications. They carry:

• E9-103R conformity mark
• E-Mark homologation
• Exhaust emission standards aligned with European norms

This ensures these parts are legal for use and meet environmental and performance regulations.

The following OEM references can help identify the correct catalytic converter for the SLK R171 model:

• A1714900314
• A1714910601
• A1714901914
• KT0271

Using these references ensures correct fitment and performance.

Yes, for enthusiasts and sports variants like the SLK 280 V6, there are high-performance metallic catalytic converters, such as those crafted by Supersprint. These metallic cats offer improved exhaust flow and are hand-built to enhance vehicle performance while maintaining emission compliance.

Prices for the SLK R171 catalytic converters generally start around €244 and can vary based on specifications and manufacturer. Delivery times may range over 14 days depending on supplier stock and logistics.

Ordering a catalytic converter that fits your vehicle's exact model and engine ensures proper function and compliance with emissions laws.

By providing your vehicle identification number (VIN) or original part reference, experts can verify fitment and power specifications. Installation manuals and technical support are typically available through professional services and suppliers to ensure correct sensor placement and system integration.

Choosing the right catalytic converter with support helps maintain your vehicle’s engine performance and emission control systems.

When replacing your catalytic converter, consider these important points:

• Always choose a part certified to meet legal emission standards.
• Prefer high-quality materials such as stainless steel with high-grade monolith technology for durability.
• Confirm compatibility with your exact vehicle model, engine type, and year of manufacture.
• Ensure proper installation and sensor connection to avoid check engine light issues.

Proper replacement helps maintain exhaust efficiency, reduces emissions, and supports vehicle performance.

If you experience engine warning lights or performance issues, checking the catalytic converter’s condition and sensor function is advisable.