Denso 234-3087 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of the Denso OE Style Oxygen Sensor 234-3087

The Denso OE Style Oxygen Sensor 234-3087 is designed specifically for select INFINITI and Nissan vehicles, including the 300ZX, J30, Pathfinder, Q45, and QX4 models. This heated oxygen sensor features a threaded mounting type and a 22.83-inch wiring harness, ensuring precise fitment and reliable performance.

• Heated oxygen sensor for accurate emissions control
• Specific fit for INFINITI and Nissan models
• Threaded mounting with 0.708-inch thread diameter
• 22.83-inch wiring harness length for proper installation
• Three-wire configuration with male connector

Detailed Product Description

The Denso OE Style line focuses on providing oxygen sensors that meet original equipment specifications, ensuring compatibility and performance consistent with factory-installed parts. The 234-3087 oxygen sensor is a heated sensor, which allows it to reach operating temperature quickly for improved emissions monitoring and engine efficiency. Its specific fitment to INFINITI and Nissan vehicles such as the 300ZX, J30, Pathfinder, Q45, and QX4 means it is engineered to match the exact wiring and mounting requirements of these models.

This sensor features a threaded mounting type with a 0.708-inch thread diameter, allowing secure installation in the exhaust system. The 22.83-inch wiring harness length provides sufficient reach for proper connection without excess slack. The three-wire design includes a male connector, facilitating straightforward integration with the vehicle’s existing wiring harness.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by enabling precise engine control
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

• Ensure vehicle compatibility with INFINITI and Nissan 300ZX, J30, Pathfinder, Q45, or QX4 models before installation
• Use proper tools to avoid damaging the threaded sensor during installation
• Verify the wiring harness length and connector type match the vehicle’s harness
• Follow manufacturer torque specifications for sensor mounting
• Inspect the exhaust port for debris or damage prior to sensor installation

Quality Assurance and Warranty

Denso’s OE Style oxygen sensors are manufactured to meet or exceed original equipment standards, providing reliable performance and durability. The 234-3087 part number undergoes rigorous quality control to ensure consistent operation within specified parameters. Warranty coverage details should be confirmed with the parts provider or vehicle manufacturer.