Denso 234-8062 Oxygen Sensor - Downstream or Downstream Left

Denso OE-Style Oxygen Sensor 234-8062

Denso 234-8062 is an OE-style downstream oxygen sensor built for specific Audi applications. It is designed for direct replacement use on select Audi A4, A5, A6 Quattro, A7 Sportback, Q5, and Q7 models, with a narrow-band sensing design and a 4-wire configuration.

The Denso oxygen sensor line is engineered to match OE standards for fit and function. This part number, 234-8062, uses a precision-built design for first-time fitment and includes Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination.

Key Features

• OE-style downstream oxygen sensor for specific Audi applications
• Narrow-band sensor type for factory-style signal output
• 4-wire design with a 20.47-inch wiring harness length
• Direct-fit replacement for select Audi A4, A5, A6 Quattro, A7 Sportback, Q5, and Q7 models
• Built to OE standards for accurate replacement fitment
• Aluminum oxide trap layer helps protect the sensing element from contamination

Detailed Description

Denso 234-8062 is an emission control sensor intended for downstream placement on supported Audi vehicles. It is a specific-fit oxygen sensor, not a universal part, and is matched to factory-style applications where a narrow-band signal is required. The OE-style design supports straightforward replacement on vehicles such as the Audi A4, Audi A5 Quattro, Audi A6 Quattro, Audi A7 Sportback, Audi Q5, and Audi Q7.

This part cross-references Bosch 25764 and Audi OE number 8K0906262F for the same application. Denso 234-8062 is also referenced by part number 2348062.

What It Helps Address

• Check engine light concerns related to downstream oxygen sensor faults
• Incorrect exhaust oxygen readings affecting fuel control strategy
• Reduced fuel economy caused by a worn or contaminated sensor
• Emissions test failures tied to sensor performance issues
• Rough or inconsistent engine operation caused by inaccurate exhaust feedback

Installation Notes and Tips

Verify the vehicle’s year, model, and sensor position before ordering. This part is listed for downstream and downstream left applications only, depending on the vehicle. Confirm connector style, wire count, and harness length against the original sensor before installation. For best results, inspect the exhaust threads and wiring routing during replacement to ensure a secure OE-style installation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The design includes contamination protection for the sensing element, supporting long-term durability in demanding exhaust environments.