Denso 234-5747 Air / Fuel Ratio Sensor - Upstream Right

OE-style air/fuel ratio sensor

This Denso air/fuel ratio sensor is a specific-fit, standard replacement part built to OE standards for accurate exhaust feedback. It uses a wide-band sensing design and a 5-wire male connector for direct replacement service on supported applications.

Fits 2020-2024 Lincoln Aviator, upstream right. Fits 2021-2022 Ford Explorer, upstream right. Fits 2020-2022 Ford Police Interceptor Utility, upstream right. Fits 2020 Ford Explorer, upstream right, from 05/06/2019.

Key features

• Wide-band sensor type for precise air/fuel measurement.
• Standard replacement grade for OE-style service.
• Specific-fit design for the listed applications.
• 5-wire configuration with male connector.
• 16.5354 wiring harness length.

Detailed description

Denso 234-5747 is an OE-style air/fuel ratio sensor for upstream right placement on select Lincoln and Ford applications. It is engineered as a direct replacement for the original sensor, with exact-fit construction intended to simplify service and restore proper signal output in the exhaust monitoring system. This part number, 234-5747, is used for 2020-2024 Lincoln Aviator, 2021-2022 Ford Explorer, and 2020-2022 Ford Police Interceptor Utility applications listed in the fitment data.

Denso manufactures and tests these sensors to OE standards, and the wide-band design supports accurate mixture monitoring where the engine management system relies on fast, precise feedback. If you are replacing a failed sensor on a Lincoln Aviator or Ford Explorer, 234-5747 provides the correct fit and connector style for the specified upstream right location.

What it is used for

• Replacing a faulty air/fuel ratio sensor that triggers engine management faults.
• Restoring accurate exhaust feedback for fuel control calculations.
• Addressing drivability issues caused by incorrect sensor output.
• Correcting sensor-related diagnostic trouble codes in the emissions system.
• Servicing the upstream right sensor location on supported Ford and Lincoln models.

Installation notes and tips

Verify the connector style, wire count, and upstream right location before installation. Confirm the vehicle build date for the 2020 Ford Explorer application, since the fitment note specifies production from 05/06/2019. Compare the original sensor connector and harness length to the replacement part number 234-5747 before final installation.

Quality assurance

Denso states that this sensor is manufactured and tested to strict OE standards for exact replacement and first-time fit.