Denso 234-4446 Oxygen Sensor - Downstream

Overview of Denso OE Style Oxygen Sensor 234-4446

The Denso OE Style Oxygen Sensor 234-4446 is designed specifically for Subaru vehicles including the Impreza, Legacy, and Outback models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated sensor type for faster response times
• Specific fit for Subaru Impreza, Legacy, and Outback
• Threaded mounting type with 0.708 inch thread diameter
• Four-wire configuration with male connector
• 27.17 inches wiring harness length for proper installation

Detailed Product Features and Specifications

This oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor is a specific fit for Subaru models such as the Impreza, Legacy, and Outback, ensuring compatibility and reliable performance. It includes a 27.17-inch wiring harness length, providing adequate reach for installation without modification. The sensor uses a threaded mounting type with a 0.708-inch thread diameter, which matches factory specifications for secure attachment. The four-wire setup with a male connector supports proper electrical connections for accurate sensor readings.

The Denso OE Style product line focuses on delivering original equipment quality and fitment, making it a suitable replacement part that meets or exceeds factory standards. This line is engineered to provide consistent performance and durability, aligning with the requirements of modern emission control systems.

Common Applications and Issues Addressed

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

Installation Notes and Tips

When installing the Denso 234-4446 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the sensor’s thread diameter matches the mounting port. Connect the male connector securely to the vehicle’s wiring harness. It is recommended to apply anti-seize compound on the threads to facilitate future removal, but avoid contaminating the sensor tip.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and longevity. This part number 234-4446 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.