Denso 234-8063 Oxygen Sensor - Downstream or Downstream Right

OE-style oxygen sensor replacement

The Denso 234-8063 oxygen sensor is a specific-fit, narrow-band sensor built to OE standards for direct replacement service. It is engineered for applications that require a precise electrical match and a first-time fit on select Volkswagen and Audi models.

• Specific-fit oxygen sensor for direct replacement service
• Narrow-band sensor design for accurate exhaust feedback
• 4-wire configuration with 31.30-inch harness length
• OE-style replacement for select downstream applications

Fitment details

Compatible with select downstream applications on the Volkswagen Atlas and Atlas Cross Sport, plus downstream applications on the Audi RS3 and Audi TT RS Quattro. Fits 2018-2023 Volkswagen Atlas, downstream right. Fits 2020-2023 Volkswagen Atlas Cross Sport, downstream right. Fits 2017-2020 Audi RS3, downstream. Fits 2018-2020 Audi TT RS Quattro, downstream.

Denso’s OE-style oxygen sensor line is built around exact replacement requirements and consistent fitment. The 234-8063 uses an aluminum oxide trap layer to help protect the sensing element from silicone and lead contamination, supporting stable sensor operation over time. This part cross-references Volkswagen/Audi OE numbers 03H906262AR and 07K906262H for the same application.

What it is used for

• Replacing a worn or slow-responding downstream oxygen sensor
• Restoring proper exhaust feedback for engine management
• Addressing fuel economy loss tied to inaccurate sensor readings
• Correcting fault codes related to oxygen sensor performance

Installation notes and quality

Verify connector style, harness length, and downstream position before installation. This sensor is a specific-fit replacement, so matching the application exactly is important for proper operation. Denso manufactures and tests these sensors to OE standards for exact replacement fit and performance.