Denso 234-3111 Oxygen Sensor - Upstream Rear or Upstream Right

Overview of the Denso OE Style Oxygen Sensor 234-3111

The Denso OE Style Oxygen Sensor 234-3111 is designed specifically for select INFINITI and Nissan vehicles, including the I30, Maxima, Pathfinder, and QX4 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster activation and improved efficiency
• Specific fit for INFINITI and Nissan models: I30, Maxima, Pathfinder, QX4
• Threaded mounting type with 0.708-inch thread diameter for secure installation
• Three-wire configuration with a male connector for reliable electrical connection
• Wiring harness length of 25.20 inches to accommodate factory routing

Details on the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering oxygen sensors that meet original equipment specifications. This ensures compatibility and performance consistent with factory-installed parts. The 234-3111 oxygen sensor maintains the standards expected from Denso’s OE Style range, providing a direct replacement that supports proper emissions control and engine management systems.

Technical Description and Features

The Denso 234-3111 oxygen sensor is a heated sensor, which means it includes an internal heating element to bring the sensor up to operating temperature quickly. This feature reduces the time the engine runs in open-loop mode, improving fuel efficiency and reducing emissions. The sensor’s three-wire design includes signal, ground, and heater wires, connected via a male connector. Its threaded mounting type with a 0.708-inch diameter ensures a secure fit in the exhaust system. The 25.20-inch wiring harness length is designed to match the factory routing on compatible INFINITI and Nissan vehicles.

Compatible Vehicles and Common Applications

• INFINITI I30 oxygen sensor replacement
• Nissan Maxima emissions sensor upgrade
• Nissan Pathfinder oxygen sensor repair
• INFINITI QX4 exhaust sensor maintenance
• Emission control sensor for specific Nissan and INFINITI models

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools to avoid damaging the threaded mounting
• Verify connector gender and wire count match the vehicle’s harness
• Apply anti-seize compound on threads if recommended by the vehicle manufacturer
• Check for proper sensor wiring and secure connections after installation

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. Using the 234-3111 sensor helps maintain compliance with emissions regulations and supports the vehicle’s engine management system.