Denso 234-9004 Air / Fuel Ratio Sensor - Upstream

Overview of the Denso OE Style Air/Fuel Ratio Sensor 234-9004

The Denso OE Style Air/Fuel Ratio Sensor 234-9004 is designed specifically for Acura and Honda vehicles, including the Civic and RSX models. This heated sensor provides accurate air/fuel mixture readings to help maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Acura and Honda Civic and RSX models
• 10.24-inch wiring harness length for precise installation
• Four-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type ensuring reliable operation

Detailed Product Description

The Denso 234-9004 air/fuel ratio sensor is engineered to meet the exact specifications of Acura and Honda vehicles, particularly the Civic and RSX. Featuring a heated sensor element, it quickly reaches operating temperature to provide accurate oxygen level readings. This sensor includes a 10.24-inch wiring harness and a four-wire setup with a male connector, ensuring compatibility with the vehicle’s existing wiring system. The thread diameter of 0.711 inches allows for proper installation and sealing in the exhaust system. As part of Denso's OE Style product line, this sensor is designed to replicate the original equipment's fit and function, providing a direct replacement without modification.

Applications and Common Issues Addressed

• Helps correct inaccurate air/fuel mixture readings
• Resolves engine performance problems related to faulty sensors
• Reduces emissions by ensuring proper fuel combustion
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by maintaining optimal sensor feedback

Installation Notes and Tips

When installing the Denso 234-9004 sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to avoid damaging the sensor or threads. Verify the wiring harness length of 10.24 inches is sufficient for your vehicle’s routing. Confirm the male connector matches the vehicle’s harness to ensure a secure electrical connection. Follow torque specifications for the 0.711-inch thread diameter to prevent leaks or sensor damage.

Quality Assurance and Warranty

This Denso OE Style air/fuel ratio sensor is manufactured to meet OEM standards for quality and durability. It undergoes rigorous testing to ensure reliable performance in Acura and Honda Civic and RSX models. While specific warranty details are not provided here, Denso products typically come with a limited warranty covering defects in materials and workmanship.