Denso 234-5175 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-5175 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Ford and Lincoln applications. It is designed for exact replacement and first-time fit, with a 5-wire female connector and a 11.46-inch wiring harness length for direct service on upstream locations.

Key Features

• Heated air/fuel ratio sensor for upstream engine management feedback
• Specific fit design for direct replacement on listed Ford and Lincoln vehicles
• 5-wire configuration with female connector
• 11.46-inch wiring harness length
• Thread diameter: 0.708
• OE Style construction for factory-style fit and function

Product Details

Denso 234-5175 is manufactured and tested to OE standards for precise signal control and dependable replacement performance. This OE Style sensor is used in upstream exhaust locations on applications such as the Ford Explorer, Ford Edge, Ford Mustang, and Lincoln MKX, where accurate air/fuel feedback is critical to engine control. If you are replacing a worn upstream air/fuel ratio sensor on a 2016-2019 Ford Explorer or a 2015-2018 Ford Edge, this part number provides a direct-fit service solution. This part cross-references Ford FB5Z9F472A and NTK 27014 for the same application.

What It Helps Address

• Check engine light related to air/fuel ratio sensor performance
• Rough idle caused by inaccurate upstream sensor readings
• Fuel trim issues from delayed or inconsistent exhaust feedback
• Emissions test failures tied to sensor response problems
• Driveability concerns on Ford and Lincoln upstream sensor applications

Installation Notes and Tips

Confirm the vehicle position before ordering, since this part is listed for upstream, upstream left, and upstream right locations depending on application. Verify connector style, wire count, and thread diameter against the original sensor before installation. This sensor is listed for 2015-2020 Ford and Lincoln models including the Ford Taurus, Ford Flex, Lincoln Continental, and Lincoln MKT, so match the exact year, model, and position to the vehicle service information.

Quality Assurance

Denso states that its OE Style sensors are precision-built and tested to strict OE standards for accurate replacement fit and function. The 234-5175 is intended to deliver factory-style service on the listed applications, including Ford E-350 Super Duty upstream and Ford Transit-150 upstream right configurations.