Denso 234-4996 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4996

The Denso OE Style Oxygen Sensor 234-4996 is designed specifically for Toyota Yaris models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a 16.61-inch wiring harness for straightforward installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Toyota Yaris vehicles
• Threaded mounting with 0.708-inch thread diameter
• 16.61-inch wiring harness length with 4 wires
• Male connector for secure electrical connection

Detailed Product Description

This Denso oxygen sensor, part number 234-4996, belongs to the OE Style product line, which focuses on delivering original equipment quality and fitment. The OE Style line is engineered to meet or exceed factory specifications, providing a reliable replacement part that integrates seamlessly with your Toyota Yaris. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions.

The sensor includes a 16.61-inch wiring harness with four wires and a male connector, ensuring compatibility with the vehicle’s existing wiring system. Its threaded mounting type with a 0.708-inch diameter allows for secure installation in the exhaust system, maintaining proper sensor positioning for accurate oxygen level readings.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate feedback to the engine control unit
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring proper sensor operation
• Prevents engine performance issues caused by faulty oxygen sensors

Installation Notes and Tips

• Ensure the vehicle is cool before installation to avoid burns
• Use appropriate tools to avoid damaging the threaded sensor mount
• Verify connector polarity and secure the male connector firmly
• Check wiring harness routing to prevent contact with hot or moving parts
• Follow Toyota Yaris specific service manual instructions for sensor replacement

Quality Assurance and Warranty

Denso’s OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number 234-4996 undergoes rigorous testing to comply with OEM specifications. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.