Denso 234-5737 Air / Fuel Ratio Sensor - Upstream Left

Denso OE-Style Air/Fuel Ratio Sensor

Denso 234-5737 is an OE-style wide-band air/fuel ratio sensor built for direct replacement on select Volkswagen applications. It is engineered for exact fit and consistent signal performance, with a specific-fit design and a 29.92 in. wiring harness for the listed upstream left locations.

Key Features

• Wide-band air/fuel ratio sensor for precise exhaust feedback
• Specific-fit replacement for the listed Volkswagen Atlas and Atlas Cross Sport applications
• 5-wire design for OE-style sensor integration
• Standard replacement grade for direct service use
• 29.92 in. wiring harness length for the confirmed fitment
• OE-style construction from Denso for first-time fitment

Detailed Description

Denso 234-5737 is an emission control sensor designed for the upstream left position on 2018-2023 Volkswagen Atlas and 2020-2023 Volkswagen Atlas Cross Sport. As part of Denso’s Air / Fuel Ratio Sensor - OE Style line, this sensor follows OE-level dimensional and performance requirements to match the original application as closely as possible. If you are searching for a 2018-2023 Volkswagen Atlas upstream left air/fuel ratio sensor or a 2020-2023 Volkswagen Atlas Cross Sport upstream left wide-band sensor, this part number is the direct replacement reference.

This part cross-references 03H906262AQ and 2345737 for the same application. Denso 234-5737 is built for vehicles that require a specific-fit, wide-band sensor in the upstream left location, helping maintain accurate air-fuel monitoring in the emission control system.

What This Sensor Helps Address

• Fault codes related to air/fuel ratio sensor performance
• Rough idle caused by inaccurate exhaust feedback
• Fuel trim issues from a degraded upstream sensor
• Emissions test failures tied to sensor response problems
• Check engine light concerns associated with the monitored bank/position

Installation Notes and Tips

Verify the upstream left position before ordering, since fitment is specific to the listed Volkswagen Atlas and Atlas Cross Sport models. Compare the connector style, wire count, and harness length to the original sensor before installation. For best results, inspect the surrounding exhaust components and clear any stored diagnostic trouble codes after replacement.

Quality Assurance

Denso manufactures and tests this air/fuel ratio sensor to OE standards for replacement accuracy and fit consistency. The Denso Air / Fuel Ratio Sensor - OE Style line is focused on direct-fit service parts that match the original application requirements for the listed vehicles.