Denso 234-4621 Oxygen Sensor - Downstream, Downstream Rear or Upstream

Overview of the Denso OE Style Oxygen Sensor 234-4621

The Denso OE Style Oxygen Sensor 234-4621 is designed specifically for select Acura and Honda models, including the Accord, Civic, CL, EL, NSX, Prelude, and TL. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Acura and Honda vehicles
• Threaded mounting type with 0.708-inch thread diameter
• Four-wire configuration with female connector
• Wiring harness length of 20.28 inches for precise installation

Detailed Features and Specifications

The Denso 234-4621 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its specific fitment ensures compatibility with various Acura and Honda models such as the Accord, Civic, CL, EL, NSX, Prelude, and TL. The sensor includes a 20.28-inch wiring harness, providing adequate length for proper routing and connection. The four-wire design supports both the sensor signal and heater circuit, while the female connector ensures secure and reliable electrical connections. The threaded mounting type with a 0.708-inch diameter allows for straightforward installation in the exhaust system.

About the Denso OE Style Product Line

The OE Style line from Denso is engineered to meet original equipment specifications, providing a direct replacement for factory-installed parts. This product line focuses on delivering precise fitment and reliable performance, making the 234-4621 oxygen sensor a suitable choice for maintaining the emissions system integrity in Acura and Honda vehicles.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring efficient combustion
• Reduces harmful emissions by maintaining proper sensor function
• Prevents engine performance issues caused by faulty sensor readings

Installation Notes and Tips

When installing the Denso 234-4621 oxygen sensor, ensure the vehicle is 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 type match the vehicle’s specifications. Proper torque should be applied to the sensor to prevent exhaust leaks and ensure sensor longevity.

Quality Assurance and Warranty

Denso manufactures the 234-4621 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 parts distributor or manufacturer documentation.