Denso 234-4249 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4249

The Denso OE Style Oxygen Sensor 234-4249 is designed specifically for select Buick, Chevrolet, and Pontiac models. This heated oxygen sensor features a threaded mounting type and a female connector, ensuring a precise fit and reliable performance for vehicles like the Buick LaCrosse and Chevrolet Impala.

• Heated oxygen sensor for accurate emissions control
• Specific fit for Buick, Chevrolet, and Pontiac models
• Threaded mounting type with 0.708 thread diameter
• Female connector with 4-wire configuration
• Wiring harness length of 11.02 inches for optimal installation

Detailed Product Features and Specifications

The Denso 234-4249 oxygen sensor is engineered with a heated sensor type to provide faster response times and improved fuel efficiency. Its 4-wire design includes a female connector, which simplifies installation and ensures secure electrical connections. The sensor’s threaded mounting type, with a 0.708-inch thread diameter, allows for a direct replacement in compatible vehicles. The wiring harness length of 11.02 inches offers sufficient reach for proper routing without excess slack.

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 is manufactured to match the fit, form, and function of the factory-installed sensor, making it a reliable choice for maintaining vehicle emissions systems. The OE Style designation indicates that this sensor is designed for specific vehicle applications, ensuring compatibility and performance consistent with the original part.

Compatible Vehicles and Common Applications

• Buick Allure
• Buick LaCrosse
• Chevrolet Impala
• Chevrolet Grand Prix
• Pontiac Grand Prix

This oxygen sensor is used to monitor exhaust gases and help regulate the air-fuel mixture for optimal engine performance and emissions control.

Issues Addressed by the Denso 234-4249 Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine performance issues such as rough idling or hesitation
• Malfunctioning heated sensor causing delayed sensor response

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Use the correct tools to remove the old sensor and install the new one with the specified 0.708 thread diameter. Verify the female connector is securely attached to the vehicle’s wiring harness. Properly route the 11.02-inch wiring harness to avoid contact with hot or moving parts.

Quality Assurance and Warranty Information

Denso manufactures this oxygen sensor to meet strict quality standards, ensuring durability and reliable operation. The OE Style 234-4249 sensor is tested for fit and function to match original equipment specifications. Warranty coverage details should be confirmed with the parts provider or vehicle manufacturer.