Denso 234-4881 Oxygen Sensor

Denso OE Style Oxygen Sensor 234-4881

Denso 234-4881 is an OE Style heated oxygen sensor built for specific-fit replacement on a wide range of Mercedes-Benz, Chrysler, Dodge, Jeep, Volkswagen, and Smart applications. It is engineered for direct replacement fitment and consistent signal performance in emissions control systems.

The Denso OE Style line is built to match original equipment requirements, with precision construction for first-time fitment and an aluminum oxide trap layer that helps protect the ceramic element from silicone and lead contamination. That design supports stable engine operation, fuel efficiency, and long service life.

Key Features

• Heated oxygen sensor for emissions control system service
• Specific-fit design for direct replacement applications
• 4-wire configuration with female connector
• Threaded mounting type with 0.708 in. thread diameter
• 12.40 in. wiring harness length
• OE Style construction for accurate fit and function
• Built with Denso’s protective aluminum oxide trap layer

Detailed Description

This Denso oxygen sensor, part number 234-4881, is designed for downstream and upstream applications across multiple import and domestic platforms. It is a direct-fit replacement for vehicles such as Mercedes-Benz C63 AMG, E350, GL450, ML350, and Smart Fortwo, along with select Chrysler Sebring, Dodge Avenger, Jeep Compass, and Volkswagen Routan models. If you are replacing a worn Mercedes-Benz oxygen sensor or servicing a Chrysler/Dodge/Jeep emissions fault, this OE Style sensor is built to match the original installation and electrical layout.

Denso’s OE Style product line focuses on exact replacement geometry and tested performance to help restore proper air-fuel feedback. This part cross-references Bosch (e.g., 15124, 16118) for the same application.

Common Issues This Part Can Help Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a failing sensor
• Reduced fuel economy caused by degraded sensor response
• Emissions test failure tied to sensor output errors
• Rough running or hesitation linked to inaccurate exhaust readings

Installation Notes and Tips

Confirm the sensor position before ordering, since this part is used in upstream, downstream, downstream right, and downstream left locations depending on the vehicle. Match the connector style, wire count, and threaded mounting dimensions to the original sensor before installation. For best results, inspect the harness routing and exhaust threads during replacement, and verify the application against the vehicle’s year, make, model, and position.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards for fit, function, and durability. The part is built for direct replacement use on confirmed applications, including Mercedes-Benz C300, C350, E550, and related fitments listed for 2005-2015 model years.