Denso 234-3109 Oxygen Sensor - Upstream, Upstream Front or Upstream Left

Overview of Denso OE Style Oxygen Sensor 234-3109

The Denso OE Style Oxygen Sensor 234-3109 is designed specifically for select Nissan and INFINITI vehicles, including the Frontier, I30, Maxima, and Sentra models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Nissan and INFINITI models
• Threaded mounting type with 0.708-inch thread diameter
• 14.96-inch wiring harness length with 3 wires
• Male connector for secure electrical connection

Detailed Features and Specifications

The Denso 234-3109 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 14.96-inch wiring harness length provides adequate reach for proper installation in the exhaust system. The sensor includes three wires and a male connector, ensuring compatibility with the vehicle’s wiring harness. The threaded mounting type with a 0.708-inch diameter allows for a secure and precise fit in the exhaust manifold or pipe.

About the Denso OE Style Product Line

The OE Style line from Denso is engineered to meet original equipment specifications, providing a direct replacement for factory-installed parts. This ensures that the 234-3109 oxygen sensor maintains the same fit, form, and function as the original sensor in Nissan and INFINITI vehicles. The OE Style line focuses on delivering reliable performance and durability consistent with OEM standards.

Applications and Common Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces emissions by accurately monitoring oxygen levels in exhaust gases
• Prevents engine performance issues such as rough idling or hesitation
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by providing accurate feedback to the engine control unit

Installation Notes and Tips

When installing the Denso 234-3109 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 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. Follow vehicle-specific torque specifications for mounting.

Quality Assurance and Warranty

Denso oxygen sensors, including the 234-3109, are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The OE Style product line is designed to match OEM quality, providing reliable operation throughout the sensor’s service life. Warranty coverage details should be confirmed with the original parts provider or vehicle manufacturer.