Denso 234-4799 Oxygen Sensor

Denso OE Style Oxygen Sensor 234-4799

Denso 234-4799 is an OE style heated oxygen sensor built for specific fitment on select Mercedes-Benz performance and SUV applications. It is engineered for direct replacement on upstream and downstream positions, with the correct connector, thread size, and harness length for a first-time fit.

For Mercedes-Benz C63 AMG, C63 AMG S, G63 AMG, G550, G550 4x4, GLC63 AMG, GLC63 AMG S, and GLE63 AMG S applications, this sensor supports accurate exhaust feedback and dependable engine management. The Denso OE Style line focuses on exact replacement dimensions and OE-level construction, and part number 234-4799 is built to match the original sensor location and connection style.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit design for direct replacement
• 4-wire configuration with female connector
• Threaded mounting type with 0.708 in. thread diameter
• 35.43 in. wiring harness length
• OE Style construction for Mercedes-Benz applications
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

Denso 234-4799 is manufactured and tested to OE standards for precise fit and consistent performance. The sensor uses a heated design to help the engine control system monitor exhaust oxygen content efficiently, while the specific-fit layout reduces guesswork during replacement. This OE Style oxygen sensor is a direct replacement choice for Mercedes-Benz C63 AMG and Mercedes-Benz G63 AMG platforms, along with other listed AMG and G-Class applications. The part number 234-4799 is also cross-referenced with Delphi ES10277.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings
• Reduced fuel economy from a failing upstream or downstream sensor
• Slow sensor response after contamination or age
• Driveability concerns tied to exhaust feedback errors

Installation Notes

• Verify the sensor position before ordering: upstream, downstream, downstream left, or downstream right.
• Confirm connector style, wire count, and thread diameter match the original unit.
• Inspect the exhaust bung and harness routing before installation.
• Use the vehicle-specific application listing to confirm compatibility with your Mercedes-Benz model and year.

Quality Assurance

Denso builds this oxygen sensor to strict OE standards and tests each design for exact replacement fit. The OE Style line is intended to deliver the correct part and the correct fit for the listed Mercedes-Benz applications, including 2013-2019 Mercedes-Benz C63 AMG, C63 AMG S, G63 AMG, G550, G550 4x4, GLC63 AMG, GLC63 AMG S, and GLE63 AMG S positions.

• Fits 2019 Mercedes-Benz C63 AMG, Upstream
• Fits 2016-2019 Mercedes-Benz C63 AMG, Downstream
• Fits 2019 Mercedes-Benz C63 AMG S, Upstream
• Fits 2015-2019 Mercedes-Benz C63 AMG S, Downstream
• Fits 2019 Mercedes-Benz G63 AMG, Downstream Right
• Fits 2019 Mercedes-Benz GLC63 AMG, Downstream Left
• Fits 2018-2019 Mercedes-Benz GLC63 AMG S, Downstream Left
• Fits 2016-2018 Mercedes-Benz G550, Downstream
• Fits 2017-2018 Mercedes-Benz G550 4x4, Downstream
• Fits 2013-2018 Mercedes-Benz G63 AMG, Downstream
• Fits 2018 Mercedes-Benz GLE63 AMG S, Downstream Left