Denso 234-4220 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Acura and Honda Vehicles

The Denso OE Style 234-4220 oxygen sensor is designed specifically for Acura and Honda models, including the Civic and EL. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated sensor type for faster response times
• Specific fit for Acura and Honda Civic and EL models
• 14.96-inch wiring harness length for proper installation
• Four-wire design with female connector for secure connection
• Threaded mounting type with 0.708-inch thread diameter

About the Denso OE Style Product Line

The OE Style line from Denso offers oxygen sensors engineered to meet original equipment specifications. This ensures compatibility and reliable performance for emission control systems. The 234-4220 sensor maintains factory standards for fit, form, and function, making it a suitable replacement part for Acura and Honda vehicles requiring precise sensor operation.

Detailed Product Description

The Denso 234-4220 oxygen sensor features a heated element that allows the sensor to reach operating temperature quickly, improving emissions monitoring during cold starts. Its four-wire configuration includes two wires for the heater circuit and two for the sensor signal, ensuring accurate data transmission. The 14.96-inch wiring harness length provides sufficient reach for proper routing and connection within the engine bay. The sensor’s threaded mounting type with a 0.708-inch diameter allows for secure installation in the exhaust system, maintaining a tight seal to prevent leaks.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Improves engine performance by providing reliable sensor data
• Prevents rough idling and poor acceleration caused by faulty sensors

Installation Notes and Tips

When installing the Denso 234-4220 oxygen sensor, ensure the vehicle is compatible with this specific fit sensor for Acura and Honda Civic and EL models. Use proper tools to avoid damaging the threaded mounting. Verify the wiring harness length and connector gender match the vehicle’s harness to ensure a secure connection. It is recommended to replace the sensor when the engine is cool to prevent burns and to apply anti-seize compound on the threads if not pre-applied.

Quality Assurance and Warranty

Denso manufactures the 234-4220 oxygen sensor to meet strict quality standards, ensuring durability and reliable performance. The OE Style product line is designed to match original equipment specifications, providing confidence in fit and function. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.