Denso 234-5064 Air / Fuel Ratio Sensor - Upstream

Reliable Air/Fuel Ratio Sensor for Mercedes-Benz Vehicles

The Denso OE Style 234-5064 air/fuel ratio sensor is engineered specifically for select Mercedes-Benz models, including the C63 AMG, C63 AMG S, C250, and SLK250. This heated sensor ensures accurate monitoring of the air-to-fuel mixture, supporting optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Mercedes-Benz C63 AMG, C63 AMG S, C250, and SLK250
• 52.56-inch wiring harness length for flexible installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for standard OEM replacement

About the Denso OE Style Product Line

The OE Style line by Denso offers direct replacement parts designed to meet original equipment specifications. The 234-5064 air/fuel ratio sensor maintains the quality and fitment standards expected from factory components, ensuring compatibility and reliable operation in Mercedes-Benz vehicles. This line focuses on providing parts that match the original sensor’s design and performance characteristics.

Detailed Product Description

This Denso air/fuel ratio sensor features a heated sensor element that allows for quicker activation and more precise readings of the exhaust gases. The 52.56-inch wiring harness length provides ample reach for installation in the engine bay, while the five-wire setup supports accurate signal transmission. Designed with a male connector and a 0.711-inch thread diameter, this sensor fits securely in the designated mounting location. Its regular grade type construction aligns with OEM standards, making it a suitable replacement for the original sensor in Mercedes-Benz C63 AMG, C63 AMG S, C250, and SLK250 models.

Common Applications and Issues Addressed

• Helps maintain proper air/fuel mixture for efficient combustion
• Prevents engine performance issues related to incorrect sensor readings
• Supports emission control compliance by monitoring exhaust gases
• Reduces risk of check engine light activation due to sensor faults
• Improves fuel economy by providing accurate data to the engine control unit

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Verify the sensor connector matches the male type and confirm the wiring harness length is sufficient for your vehicle’s layout. Use proper tools to avoid damaging the 0.711-inch threaded mounting area. After installation, clear any diagnostic trouble codes and perform a test drive to confirm sensor operation.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet strict quality standards consistent with original equipment. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. Using this sensor helps maintain the integrity of your Mercedes-Benz emission control system.