Denso 234-5115 Air / Fuel Ratio Sensor - Upstream or Upstream Left

Reliable Air/Fuel Ratio Sensor for Audi and Volkswagen Vehicles

The Denso OE Style 234-5115 air/fuel ratio sensor is designed specifically for select Audi and Volkswagen models. This heated sensor ensures accurate emissions control and optimal engine performance by precisely monitoring the air-to-fuel mixture.

• Heated sensor type for faster response times
• Specific fit for Audi and Volkswagen models including A4, Golf, Jetta, Passat, and more
• 58.66-inch wiring harness length for flexible installation
• Five-wire configuration with male connector for secure connection
• Thread diameter of 0.711 inches for proper mounting
• Regular grade type ensuring consistent performance

About the Denso OE Style Product Line

The OE Style line from Denso offers replacement parts engineered to meet original equipment specifications. The 234-5115 air/fuel ratio sensor maintains the quality and fitment standards expected from factory components, providing a direct replacement for emission control sensors on compatible Audi and Volkswagen vehicles.

Detailed Product Description

This Denso air/fuel ratio sensor (part number 234-5115) is a heated sensor designed to provide accurate feedback to the engine control unit by measuring the oxygen content in the exhaust gases. Its 58.66-inch wiring harness and five-wire setup with a male connector allow for straightforward integration with the vehicle’s existing wiring. The sensor’s thread diameter of 0.711 inches ensures proper installation and sealing. This sensor is a specific fit for various Audi and Volkswagen models, including the A4, A4 Quattro, A8 Quattro, Beetle, EuroVan, Golf, Jetta, Passat, Phaeton, Touareg, TT, and TT Quattro.

Common Applications and Issues Addressed

• Helps maintain proper air/fuel mixture for efficient combustion
• Reduces emissions by providing accurate sensor data to the ECU
• Prevents engine performance issues related to faulty oxygen sensing
• Addresses check engine light triggers related to air/fuel ratio sensor faults
• Improves fuel economy by ensuring correct sensor operation

Installation Notes and Tips

When installing the Denso 234-5115 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. Verify the connector gender matches the vehicle harness for a secure fit. Follow torque specifications for the 0.711-inch thread diameter to prevent leaks. It is recommended to clear any diagnostic trouble codes after installation to reset the engine control unit.

Quality Assurance and Warranty

Denso’s OE Style sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. This sensor is designed to provide consistent operation within the emission control system of compatible Audi and Volkswagen vehicles.