Denso 234-4777 Oxygen Sensor - Downstream Front, Downstream Left or Downstream Right

Overview of the Denso OE Style Oxygen Sensor 234-4777

The Denso OE Style Oxygen Sensor 234-4777 is designed specifically for select Nissan and INFINITI models, including the Maxima, Sentra, and I30. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated sensor type for faster response times
• Specific fit for Nissan Maxima, Sentra, and INFINITI I30
• Threaded mounting type with 0.708-inch thread diameter
• Four-wire design with male connector for secure connection
• Wiring harness length of 30.71 inches for proper installation

Detailed Features and Specifications

The Denso 234-4777 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emissions control efficiency. Its four-wire configuration supports both the sensor signal and heater circuit, ensuring reliable operation. The sensor is designed with a threaded mounting type and a 0.708-inch thread diameter, providing a secure and precise fit in the exhaust system. The wiring harness length of 30.71 inches offers sufficient reach for installation in the specified Nissan and INFINITI models. The male connector ensures compatibility with the vehicle’s existing wiring harness.

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering oxygen sensors that match original equipment specifications for fit, form, and function. This product line is engineered to meet the exact requirements of the vehicle manufacturer, providing a direct replacement that maintains factory performance standards. The 234-4777 sensor is part of this line, ensuring it meets the precise needs of Nissan and INFINITI vehicles like the Maxima, Sentra, and I30.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Resolves check engine light issues related to oxygen sensor faults
• Helps reduce harmful emissions by maintaining proper combustion
• Prevents engine performance problems caused by faulty sensor data
• Supports smooth engine idling and acceleration response

Installation Notes and Tips

When installing the Denso 234-4777 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 wiring harness length of 30.71 inches is sufficient for your vehicle’s routing. Confirm the male connector aligns properly with the vehicle’s harness to ensure a secure electrical connection. Follow manufacturer torque specifications to avoid sensor damage.

Quality Assurance and Warranty

Denso oxygen sensors, including the 234-4777, are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. This sensor is designed to provide reliable operation over the life of the vehicle’s emissions system. Warranty coverage details should be confirmed with the original equipment manufacturer or authorized distributor.