Denso 234-3089 Oxygen Sensor - Upstream or Upstream Right

Overview of the Denso OE Style Oxygen Sensor 234-3089

The Denso OE Style Oxygen Sensor 234-3089 is designed for precise emission control in select Infiniti, Mercury, and Nissan vehicles. This heated oxygen sensor features a specific fitment and a threaded mounting type, ensuring reliable installation and accurate performance.

• Heated oxygen sensor for faster response times
• Specific fitment for Infiniti, Mercury, and Nissan models
• Threaded mounting type with 0.708 thread diameter
• 15.35-inch wiring harness length with 3 wires
• Male connector for secure electrical connection

Detailed Features and Specifications

This Denso oxygen sensor (part number 234-3089) is engineered with a heated sensor element to provide quicker warm-up and improved fuel mixture readings. The 15.35-inch wiring harness length allows for proper routing in the engine bay, while the 3-wire configuration supports sensor heating and signal transmission. The male connector ensures compatibility with the vehicle’s wiring harness, and the threaded mounting type with a 0.708-inch diameter allows for secure installation in the exhaust system.

About the OE Style Product Line

The Denso OE Style line is designed to meet original equipment specifications, providing a direct replacement for factory-installed parts. This ensures that the oxygen sensor 234-3089 maintains the same fit, form, and function as the original sensor in Infiniti, Mercury, and Nissan vehicles. The OE Style line focuses on quality and compatibility, making it suitable for emission control system repairs.

Compatible Vehicles and Common Applications

• Infiniti Q45 and G20
• Mercury Villager
• Nissan 200SX, Frontier, Quest, Sentra, and Xterra
• Designed specifically for these models to ensure proper fit and function

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions from inefficient combustion
• Engine performance problems such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

When installing the Denso 234-3089 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use the correct socket size for the 0.708-inch threaded sensor to prevent damage. Verify the male connector aligns properly with the vehicle’s wiring harness. It is recommended to apply anti-seize compound on the threads to facilitate future removal, but avoid contaminating the sensor tip.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards and original equipment specifications. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. This ensures dependable performance and durability for emission control applications in compatible Infiniti, Mercury, and Nissan vehicles.