Denso 234-5753 Air / Fuel Ratio Sensor - Upstream or 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 signal control. It is engineered for a first-time fit and direct replacement performance on select Ford applications, including Mustang, Ranger, Transit Connect, and Fusion.

Key features

• Wide-band sensor design for precise air/fuel monitoring
• Specific-fit replacement for direct application matching
• Female connector with a 5-wire configuration
• 19.8425 wiring harness length for application-specific routing
• OE-style construction from Denso

Detailed description

Denso 234-5753 is an OE-style air/fuel ratio sensor made for exact replacement on supported Ford vehicles. The wide-band design helps the engine management system read exhaust oxygen content with the precision needed for fuel control and emissions monitoring. This part number, 234-5753, is built as a standard replacement with the correct connector style and harness length for the listed applications. It fits 2018-2024 Ford Mustang, upstream right; 2020-2024 Ford Ranger, upstream; 2019-2023 Ford Transit Connect, upstream; and 2017-2020 Ford Fusion, upstream. This part cross-references Monroe Shocks & Struts (e.g., HS7Z9F472A, JR3Z9F472C) for the same application.

What it is used for

• Replacing a failed sensor that can trigger drivability or emissions faults
• Restoring accurate air/fuel feedback to the engine control system
• Addressing rough idle, poor fuel control, or sensor-related warning lights
• Correcting signal issues caused by worn internal sensing elements

Installation notes and tips

Verify the connector style, wire count, and upstream position before installation. Confirm the vehicle build date for the 2019 Ford Ranger application, which applies from 11/26/2018. Use the listed fitment exactly as shown for Mustang, Ranger, Transit Connect, and Fusion applications.

Quality assurance

Denso manufactures and tests this sensor to strict OE standards for exact replacement fit and consistent performance. The 234-5753 is built to deliver the correct part and the correct fit on the first installation.