Genuine 0021403860 Secondary Air Injection Shut-Off Valve

Reliable Secondary Air Injection Shut-Off Valve for Mercedes-Benz

The Genuine Secondary Air Injection Shut-Off Valve (Part Number 0021403860) is designed specifically for select Mercedes-Benz models. This component plays a critical role in the emission control system, ensuring proper operation of the air injection system to reduce harmful exhaust emissions.

• Compatible with Mercedes-Benz C36 AMG, C280, CL500, E320, E420, S320, S420, S500, SL320, and SL500 models
• Genuine part ensuring OEM fit and function
• Part Number 0021403860 for precise identification and replacement
• Essential for maintaining emission control system efficiency
• Durable construction for long-lasting performance

Product Overview and Functionality

The Secondary Air Injection Shut-Off Valve is a vital component within the emission control system of Mercedes-Benz vehicles. It regulates the flow of secondary air into the exhaust stream during cold starts, helping to reduce emissions by promoting the oxidation of unburned hydrocarbons. This Genuine valve is engineered to meet the exact specifications of Mercedes-Benz models including the C36 AMG, C280, CL500, E320, E420, S320, S420, S500, SL320, and SL500, ensuring reliable operation and compatibility.

Common Issues Addressed by This Valve

• Emission control system warning lights or fault codes related to air injection
• Increased exhaust emissions during cold engine starts
• Failed emissions tests due to secondary air injection malfunctions
• Rough engine idle or hesitation caused by improper air injection
• Check engine light triggered by faulty shut-off valve operation

Installation Notes and Tips

• Ensure the vehicle is cool and ignition is off before installation
• Verify compatibility with your specific Mercedes-Benz model using the part number 0021403860
• Inspect related hoses and connectors for wear or damage during replacement
• Follow manufacturer torque specifications when securing the valve
• Clear any diagnostic trouble codes after installation to reset the system

Quality Assurance and Warranty

This Genuine Secondary Air Injection Shut-Off Valve is manufactured to meet Mercedes-Benz OEM standards, providing reliable performance and durability. While specific warranty details may vary, Genuine parts typically come with a limited warranty covering defects in materials and workmanship. Using this part helps maintain the integrity of your vehicle's emission control system and supports compliance with environmental regulations.