Denso 234-4578 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4578

The Denso OE Style Oxygen Sensor 234-4578 is designed specifically for select Ford and Lincoln vehicles, including the C-Max, Escape, Fusion, MKZ, and Transit Connect models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster activation and improved efficiency
• Specific fit for Ford and Lincoln models: C-Max, Escape, Fusion, MKZ, Transit Connect
• Threaded mounting type with 0.708 inch thread diameter for secure installation
• Four-wire design with female connector for reliable electrical connection
• Wiring harness length of 26.57 inches to accommodate factory routing

Details on the Denso OE Style Product Line

The OE Style product line from Denso focuses on delivering parts that meet original equipment specifications. This oxygen sensor 234-4578 is engineered to match the fit, form, and function of the factory-installed sensor, ensuring compatibility and performance consistency for your Ford or Lincoln vehicle. The OE Style line is ideal for those seeking a direct replacement part without modifications.

Technical Description and Features

This oxygen sensor features a heated element that allows it to reach operating temperature quickly, reducing emissions during cold starts. The sensor’s four-wire configuration includes two wires for the heating element and two for the sensor signal, providing accurate feedback to the engine control unit. The 0.708 inch threaded mounting ensures a secure fit in the exhaust system, while the female connector matches factory wiring harnesses for straightforward installation. With a wiring harness length of 26.57 inches, this sensor fits the specified Ford and Lincoln models without the need for extensions or modifications.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance issues such as rough idling or hesitation
• Resolves check engine light triggers related to oxygen sensor faults
• Supports compliance with emissions regulations for Ford and Lincoln vehicles

Installation Notes and Tips

When installing the Denso OE Style Oxygen Sensor 234-4578, ensure the engine and exhaust system are cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the connector gender matches the vehicle harness before installation. Thread the sensor by hand initially to prevent cross-threading, then tighten to manufacturer torque specifications. The 26.57-inch wiring harness length allows for proper routing without strain or interference.

Quality Assurance and Warranty

Denso manufactures this oxygen sensor to meet strict quality standards consistent with original equipment parts. The OE Style line is designed for durability and reliable performance in emission control systems. While specific warranty details are not provided here, Denso typically offers coverage against defects in materials and workmanship. Refer to the product packaging or Denso’s official documentation for exact warranty terms.