Denso 234-4090 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4090

The Denso OE Style Oxygen Sensor 234-4090 is designed specifically for select Saturn models, including the L100, L200, LS, LS1, LW1, and LW200. This heated oxygen sensor features a 27.56-inch wiring harness and a threaded mounting type, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for accurate exhaust gas monitoring
• Specific fit for Saturn L100, L200, LS, LS1, LW1, and LW200 models
• 27.56-inch wiring harness length for optimal installation flexibility
• Threaded mounting type with 0.708-inch thread diameter
• Four-wire configuration with female connector for secure electrical connection

Detailed Product Features and Specifications

This Denso oxygen sensor, part number 234-4090, is engineered with a heated sensor element to provide faster response times and improved fuel efficiency. The four-wire design includes a female connector, facilitating a secure and reliable electrical connection. The 0.708-inch threaded mounting type ensures compatibility with the exhaust system of Saturn vehicles listed in the fitment. The 27.56-inch wiring harness length offers sufficient reach for straightforward installation without the need for extensions or modifications.

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that meet original equipment specifications. This oxygen sensor aligns with the OE Style commitment by providing a direct replacement that matches the fit, form, and function of the factory-installed sensor. Using this sensor helps maintain the emission control integrity of your Saturn vehicle while supporting optimal engine performance.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for proper air-fuel mixture control
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce emissions by ensuring correct sensor operation
• Prevents check engine light triggers caused by sensor failure
• Improves fuel economy by maintaining efficient combustion

Installation Notes and Tips

When installing the Denso 234-4090 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 female connector matches the vehicle harness before installation. Avoid twisting or stretching the 27.56-inch wiring harness to maintain sensor integrity. It is recommended to clear any diagnostic trouble codes after installation to reset the engine control unit.

Quality Assurance and Warranty Information

Denso oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The OE Style 234-4090 sensor is designed to provide reliable operation consistent with original equipment. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region.