Denso 234-4509 Oxygen Sensor

Reliable Oxygen Sensor for Lexus and Toyota Vehicles

The Denso OE Style 234-4509 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Highlander, RX330, RX350, and RX450h. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models listed
• Threaded mounting type with 0.708 inch thread diameter
• Four-wire design with female connector
• Wiring harness length of 25.59 inches for precise installation

About the Denso OE Style Product Line

The OE Style line from Denso offers direct replacement parts engineered to meet original equipment specifications. The 234-4509 oxygen sensor maintains factory-level quality and fitment, ensuring compatibility and reliable performance for your Lexus or Toyota vehicle.

Product Details and Specifications

This oxygen sensor features a heated element to provide quicker sensor activation and improved fuel mixture readings. The four-wire configuration supports both the sensor signal and heater circuit, while the female connector ensures secure electrical connections. With a 25.59-inch wiring harness length and a threaded mounting type with a 0.708-inch diameter, this sensor is designed for straightforward installation in compatible Lexus Highlander and RX series models.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for proper fuel mixture
• Helps resolve check engine light codes related to oxygen sensors
• Improves fuel efficiency by ensuring correct air-fuel ratio
• Reduces harmful emissions by maintaining proper combustion
• Prevents engine performance issues caused by faulty sensors

Installation Notes and Tips

Ensure the vehicle is cool before removing the old sensor to avoid burns. Use appropriate tools to avoid damaging the threaded mounting. Verify the connector type matches the vehicle harness before installation. Follow torque specifications recommended by the vehicle manufacturer for secure mounting.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards for durability and performance. The 234-4509 part number undergoes rigorous testing to ensure reliable operation in Lexus and Toyota vehicles. Please refer to Denso's warranty policy for specific coverage details.