Denso 234-4802 Oxygen Sensor - Upstream

Overview of the Denso OE Style Oxygen Sensor 234-4802

The Denso OE Style Oxygen Sensor 234-4802 is designed specifically for select Pontiac and Toyota models, including the Corolla, Matrix, and Vibe. This heated oxygen sensor features a 21.46-inch wiring harness and a threaded mounting type for precise installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Pontiac and Toyota Corolla, Matrix, and Vibe
• 21.46-inch wiring harness length for optimal routing
• Threaded mounting with 0.708-inch thread diameter
• Four-wire configuration with female connector

Detailed Product Features and Specifications

The Denso 234-4802 oxygen sensor is a heated sensor designed to provide reliable and accurate readings of oxygen levels in the exhaust system. Its 21.46-inch wiring harness length allows for proper connection without excess slack or strain. The sensor uses a four-wire setup, including a female connector, ensuring compatibility with the vehicle’s existing wiring harness. The threaded mounting type with a 0.708-inch diameter allows for secure installation in the exhaust manifold or pipe. This sensor is a specific fit, engineered to meet the exact requirements of Pontiac and Toyota models such as the Corolla, Matrix, and Vibe.

About the Denso OE Style Product Line

The OE Style product line from Denso focuses on delivering parts that closely match original equipment specifications. This ensures that the oxygen sensor 234-4802 maintains the performance and reliability expected from factory-installed components. The OE Style line is designed to provide a direct replacement with precise fitment and function, supporting proper emissions control and engine management systems.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for optimal fuel mixture
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves emissions system performance and compliance
• Reduces rough idling and engine hesitation caused by faulty sensors
• Supports efficient catalytic converter operation

Installation Notes and Tips

When installing the Denso 234-4802 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 0.708-inch threaded sensor to prevent damage. Verify the four-wire female connector matches the vehicle harness before installation. Proper torque specifications should be followed to secure the sensor without over-tightening. It is recommended to inspect the wiring harness for any damage or corrosion during replacement.

Quality Assurance and Warranty

Denso oxygen sensors, including the 234-4802, are manufactured to meet strict quality standards for durability and performance. This part is engineered to provide consistent sensor readings and long service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.