Delphi ES11084 Oxygen Sensor - Front Left

Delphi ES11084 Oxygen Sensor for Front Left Applications

The Delphi ES11084 is a heated oxygen sensor built for front left placement on select 2001 Infiniti QX4 and 2001 Nissan Pathfinder applications. It uses a 3-wire layout, flat connector shape, and 18 x 1.5 mm thread size for a direct-fit style replacement where the original sensor matches these specifications.

Key Features

• Heated oxygen sensor for faster operating temperature
• 3-wire design
• Flat connector shape
• 18 x 1.5 mm thread size
• Front left position
• Package contents: oxygen sensor and instruction sheet
• Built with Delphi OE heritage and aftermarket engineering knowledge

Detailed Description

Delphi ES11084 is an emission control sensor for monitoring exhaust oxygen content and supporting engine management feedback. It is listed for the front left position on the 2001 Infiniti QX4, except mid-year emissions, and the 2001 Nissan Pathfinder, to 08/2000. If you are searching for a 2001 Infiniti QX4 front left oxygen sensor or a 2001 Nissan Pathfinder front left oxygen sensor, this part number is the direct reference to verify against your original unit. This part cross-references Bosch 15355 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn upstream sensor
• Reduced fuel control accuracy at the engine management level
• Emission test failures tied to sensor response issues
• Replacement needs after sensor aging, contamination, or electrical fault

Installation Notes and Tips

Confirm the front left location, connector style, wire count, and thread size before installation. Compare the original sensor and vehicle build details, especially for the 2001 Infiniti QX4 with mid-year emissions notes and the 2001 Nissan Pathfinder with the to 08/2000 fitment note. Use the included instruction sheet during installation and verify the connector locks securely after routing the harness away from heat sources.

Quality Assurance

Delphi draws on OE supplier experience and long-standing original equipment knowledge in the design of its aftermarket parts. The ES11084 reflects that OE-based engineering approach for emission control service on the listed Infiniti and Nissan applications.