Denso 234-4290 Oxygen Sensor - Upstream

Overview of the Denso OE Style Oxygen Sensor 234-4290

The Denso OE Style Oxygen Sensor 234-4290 is designed specifically for select Chevrolet and Pontiac models, including the Aveo, Aveo5, G3, and G3 Wave. This heated oxygen sensor features a threaded mounting type and a 13.58-inch wiring harness, ensuring precise fitment and reliable performance.

• Heated oxygen sensor for accurate emissions control
• Specific fit for Chevrolet Aveo, Aveo5, Pontiac G3, and G3 Wave
• Threaded mounting with 0.708-inch thread diameter
• 13.58-inch wiring harness length with 4 wires and male connector
• Part number 234-4290 for exact replacement

Detailed Product Features and Specifications

This Denso oxygen sensor is part of the OE Style product line, which focuses on delivering components that match original equipment specifications. The OE Style line ensures that the sensor meets the exact fit, form, and function requirements for the intended vehicles. The 234-4290 sensor is a heated type, which helps the sensor reach operating temperature faster for improved emissions monitoring and engine performance.

The sensor includes a 13.58-inch wiring harness with four wires and a male connector, designed for direct compatibility with the vehicle’s existing wiring. The threaded mounting type with a 0.708-inch diameter allows for secure installation in the exhaust system, maintaining proper sensor positioning and sealing.

Applications and Common Issues Addressed

• Restores accurate oxygen level readings for engine control units
• Helps resolve rough idling and poor fuel economy caused by faulty sensors
• Reduces emissions by ensuring proper air-fuel mixture adjustments
• Eliminates check engine light triggers related to oxygen sensor faults
• Prevents failed emissions tests due to sensor malfunction

Installation Notes and Tips

• Ensure the vehicle is compatible: Chevrolet Aveo, Aveo5, Pontiac G3, or G3 Wave
• Disconnect the battery before installation to avoid electrical issues
• Use appropriate tools to remove the old sensor and install the threaded sensor securely
• Check wiring harness length and connector type for proper fitment
• Verify no exhaust leaks around the sensor mounting area after installation

Quality Assurance and Warranty Information

Denso’s OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. While specific warranty details for part number 234-4290 may vary, Denso typically offers coverage against defects in materials and workmanship. Always refer to the product documentation or supplier for exact warranty terms.