Denso 234-4381 Oxygen Sensor - Downstream, Downstream Front or Downstream Left

Reliable Oxygen Sensor for Nissan and Infiniti Vehicles

The Denso OE Style Oxygen Sensor 234-4381 is designed specifically for select Nissan and Infiniti models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a 10.71-inch wiring harness for straightforward installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Nissan Altima, GT-R, Maxima, Murano, NV2500, NV3500, Pathfinder, Quest, QX56, and QX80
• Threaded mounting with 0.708-inch thread diameter
• 10.71-inch wiring harness length with 4 wires and male connector
• Part number 234-4381 ensures exact replacement compatibility

About the Denso OE Style Product Line

The OE Style line by Denso offers sensors engineered to meet original equipment specifications. This ensures that the 234-4381 oxygen sensor maintains factory-level performance and durability, providing a direct replacement that supports the emission control systems of Nissan and Infiniti vehicles without modification.

Detailed Product Description

This Denso oxygen sensor 234-4381 is a heated sensor designed to provide accurate feedback to the engine control unit by measuring oxygen levels in the exhaust gases. The sensor’s 4-wire configuration includes heating elements that allow it to reach operating temperature quickly, improving emissions control efficiency. The 0.708-inch threaded mounting type ensures a secure fit in the exhaust system. With a 10.71-inch wiring harness and a male connector, this sensor is tailored for specific Nissan and Infiniti models, including the Altima, GT-R, Maxima, Murano, NV2500, NV3500, Pathfinder, Quest, QX56, and QX80.

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 and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Failed or degraded sensor causing improper catalytic converter function

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools for threaded sensor removal and installation
• Verify connector type and wire count match the vehicle harness
• Apply anti-seize compound on threads if recommended by manufacturer
• Clear diagnostic trouble codes after installation to reset the system

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 products typically come with a limited warranty covering defects in materials and workmanship. Using part number 234-4381 ensures compatibility and reliability for your Nissan or Infiniti vehicle’s emission control system.