Denso 234-4712 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Mercedes-Benz 300CE, 300E, 300TE, E320

The Denso OE Style Oxygen Sensor 234-4712 is engineered to meet the specific emission control needs of select Mercedes-Benz models. Designed as a direct replacement part, this heated oxygen sensor ensures accurate air-fuel mixture readings for optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for Mercedes-Benz 300CE, 300E, 300TE, and E320 models
• Threaded mounting type with 0.708-inch thread diameter
• 29.72-inch wiring harness length with 4 wires
• Male and female connector genders for secure electrical connection

About the Denso OE Style Product Line

The OE Style line from Denso focuses on providing parts that match original equipment specifications closely. This oxygen sensor 234-4712 is designed to replicate the fit, form, and function of the factory-installed sensor, ensuring compatibility and reliable operation within the emission control system of your Mercedes-Benz vehicle.

Detailed Product Description

This Denso oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor accuracy and reducing emissions during cold starts. The 29.72-inch wiring harness length and four-wire configuration provide a precise electrical interface, while the threaded mounting type with a 0.708-inch diameter ensures a secure and proper fit. The sensor’s male and female connectors facilitate straightforward installation and reliable connectivity.

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance problems such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and install the new one with the specified 0.708-inch threaded mounting. Verify the wiring harness length and connector types match the vehicle’s factory setup to prevent electrical issues. Proper torque specifications should be followed to avoid sensor damage or exhaust leaks.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number 234-4712 is designed specifically for Mercedes-Benz 300CE, 300E, 300TE, and E320 models, providing confidence in fit and function. Warranty details are provided by the manufacturer and should be reviewed prior to installation.