Denso 234-5065 Air / Fuel Ratio Sensor - Upstream

Overview of the Denso OE Style Air/Fuel Ratio Sensor

The Denso OE Style Air/Fuel Ratio Sensor 234-5065 is designed specifically for select Mercedes-Benz models, including the C300, C350, E300, E350, and GLK350. 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 C300, C350, E300, E350, GLK350
• 19.96-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 234-5065 air/fuel ratio sensor is engineered to provide accurate oxygen level readings by measuring the exhaust gases in real time. This heated sensor type improves warm-up time, allowing the engine control unit to adjust fuel delivery more efficiently. With a wiring harness length of 19.96 inches and a five-wire setup, this sensor integrates seamlessly with the vehicle’s existing electrical system. The male connector and 0.711-inch thread diameter ensure a secure and precise fit. Designed specifically for Mercedes-Benz models such as the C300, C350, E300, E350, and GLK350, this sensor meets the exact specifications required for proper emission control and engine management.

About the OE Style Product Line

The Denso OE Style product line focuses on delivering parts that match original equipment specifications for direct replacement. The OE Style air/fuel ratio sensor 234-5065 maintains the quality and fitment standards expected from factory components, ensuring compatibility and performance without modification. This line is ideal for customers seeking reliable, vehicle-specific sensors that meet manufacturer requirements.

Common Applications and Issues Addressed

• Helps correct inaccurate air/fuel mixture readings
• Resolves engine performance issues related to faulty oxygen sensors
• Reduces emissions by providing precise exhaust gas data
• Prevents check engine light triggers related to sensor faults
• Improves fuel efficiency by optimizing combustion control

Installation Notes and Tips

When installing the Denso 234-5065 sensor, ensure the wiring harness is routed without tension or sharp bends to avoid damage. Use the correct thread diameter of 0.711 inches to secure the sensor properly. Verify the male connector is fully seated to maintain electrical integrity. It is recommended to follow the vehicle manufacturer’s torque specifications and safety procedures during installation.

Quality Assurance and Warranty

Denso’s OE Style air/fuel ratio sensor 234-5065 is manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. This ensures confidence in the sensor’s reliability for Mercedes-Benz C300, C350, E300, E350, and GLK350 applications.