Denso 234-5151 Air / Fuel Ratio Sensor - Upstream or Upstream Left

Reliable Air/Fuel Ratio Sensor for Ford and Lincoln Vehicles

The Denso OE Style 234-5151 Air/Fuel Ratio Sensor is designed specifically for select Ford and Lincoln models, including the Fusion, MKS, and Transit series. This heated sensor ensures accurate monitoring of the air-to-fuel mixture, helping maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Ford Fusion, Lincoln MKS, and Transit-150/250/350 models
• 19.29-inch wiring harness length for precise installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for standard durability and performance

About the Denso OE Style Product Line

The OE Style line from Denso offers parts engineered to meet original equipment specifications. This ensures that the 234-5151 Air/Fuel Ratio Sensor matches the fit, form, and function of the factory-installed component. Designed for direct replacement, the OE Style sensor supports reliable emissions control and engine management systems in compatible Ford and Lincoln vehicles.

Detailed Product Description

The Denso 234-5151 Air/Fuel Ratio Sensor is a heated sensor that provides precise measurement of the oxygen content in the exhaust gases. Its 19.29-inch wiring harness and five-wire setup allow for straightforward integration with the vehicle’s existing electrical system. The male connector and 0.711-inch thread diameter ensure a secure and proper fit. This sensor is tailored specifically for Ford Fusion, Lincoln MKS, and Transit-150, Transit-250, and Transit-350 models, making it a reliable choice for maintaining emissions compliance and engine efficiency.

Common Issues Addressed by This Sensor

• Incorrect air/fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

When installing the Denso 234-5151 sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to avoid damaging the 0.711-inch threaded fitting. Verify the wiring harness length of 19.29 inches is sufficient for your vehicle’s routing. Confirm the male connector aligns properly with the vehicle’s harness to ensure a secure electrical connection. Follow manufacturer torque specifications to prevent sensor damage.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet strict quality standards consistent with original equipment parts. This ensures dependable performance and durability. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship, providing confidence in the 234-5151 Air/Fuel Ratio Sensor’s reliability.