Denso 234-4370 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4370

The Denso OE Style Oxygen Sensor 234-4370 is designed specifically for Ford Focus models, providing precise emission control through accurate oxygen level monitoring. This heated oxygen sensor features a threaded mounting type and a 12.09-inch wiring harness, ensuring a secure and reliable fit.

• Heated oxygen sensor for faster response times
• Specific fit for Ford Focus vehicles
• Threaded mounting with 0.708-inch thread diameter
• 12.09-inch wiring harness length for optimal installation
• Four-wire design with male connector for compatibility

Detailed Features and Specifications

The Denso 234-4370 oxygen sensor is a heated sensor, which means it includes an internal heating element to bring the sensor up to operating temperature quickly. This feature improves fuel efficiency and reduces emissions by providing accurate data to the engine control unit (ECU) sooner than unheated sensors. The sensor is designed with a 0.708-inch threaded mounting type, allowing for a secure and direct installation in the exhaust system of Ford Focus vehicles. The wiring harness length of 12.09 inches and four-wire configuration with a male connector ensures proper electrical connection and compatibility with the vehicle’s existing wiring harness.

About the Denso OE Style Product Line

The OE Style product line from Denso focuses on delivering parts that meet original equipment specifications for fit, form, and function. This oxygen sensor is engineered to match the exact requirements of the Ford Focus, ensuring reliable performance and durability. The OE Style line is intended for customers seeking replacement parts that maintain factory standards without compromise.

Common Applications and Problem Resolution

• Restores accurate oxygen level readings for optimal engine performance
• Helps resolve check engine light issues related to oxygen sensor faults
• Improves fuel economy by providing precise air-fuel mixture data
• Reduces harmful emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Denso 234-4370 oxygen sensor on a Ford Focus, ensure the engine and exhaust system are cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the wiring harness length and connector gender match the vehicle’s specifications before installation. Proper torque should be applied to the threaded sensor to prevent leaks and ensure sensor longevity.

Quality Assurance and Warranty

Denso oxygen sensors, including the 234-4370, are manufactured to meet strict quality standards and undergo rigorous testing to ensure reliability and durability. This part is backed by Denso’s quality assurance protocols, providing confidence in its performance and fitment for Ford Focus vehicles. Warranty details are available through authorized distributors and typically cover defects in materials and workmanship.