Denso 234-5117 Air / Fuel Ratio Sensor - Upstream or Upstream Right

Overview of the Denso OE Style Air/Fuel Ratio Sensor 234-5117

The Denso OE Style Air/Fuel Ratio Sensor 234-5117 is designed specifically for select Mercedes-Benz, Porsche, and Volkswagen models. This heated sensor ensures accurate air and fuel mixture readings to support optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Mercedes-Benz C230, Porsche Cayenne, and Volkswagen Phaeton
• 33.07-inch wiring harness length for precise installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for reliable operation

Detailed Product Description

The Denso 234-5117 air/fuel ratio sensor is engineered to provide accurate feedback to the engine control unit by measuring the oxygen content in the exhaust gases. This heated sensor type improves warm-up time, allowing the engine to reach optimal operating conditions more quickly. The 33.07-inch wiring harness length offers flexibility during installation, while the five-wire design ensures proper signal transmission. The male connector and 0.711-inch thread diameter are designed to match OEM specifications, guaranteeing a precise fit and secure connection. This sensor is a specific fit for Mercedes-Benz C230, Porsche Cayenne, and Volkswagen Phaeton models, ensuring compatibility and performance.

About the Denso OE Style Product Line

The OE Style product line from Denso focuses on delivering parts that meet original equipment specifications. This air/fuel ratio sensor from the OE Style line is manufactured to match the fit, form, and function of the original sensor installed in your vehicle. Using OE Style parts helps maintain factory performance standards and supports proper emissions control systems in your Mercedes-Benz, Porsche, or Volkswagen.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by incorrect air/fuel mixture readings
• Addresses rough idling or engine hesitation related to faulty oxygen sensors
• Supports reduction of emissions to meet regulatory standards
• Prevents check engine light triggers related to sensor malfunction
• Improves overall engine performance and drivability

Installation Notes and Tips

When installing the Denso 234-5117 air/fuel ratio sensor, ensure the vehicle is cooled down to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 33.07-inch wiring length provides flexibility, but routing should avoid heat sources and moving parts. Confirm the male connector is securely attached to the vehicle’s wiring harness. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Denso manufactures the 234-5117 sensor to meet strict quality standards consistent with OEM requirements. The OE Style line ensures reliable performance and durability. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or supplier for exact warranty terms.