Delphi ES20099 Oxygen Sensor - Rear Left or Rear Right

Delphi ES20099 Oxygen Sensor Overview

The Delphi ES20099 is a heated oxygen sensor designed for precise emission control in select Nissan and INFINITI vehicles. Engineered to meet OEM specifications, this sensor supports optimal engine performance and reduced emissions for models like the Nissan Maxima, Sentra, and INFINITI I30.

• Heated oxygen sensor with 4-wire design for accurate readings
• Square connector shape ensures secure and reliable connection
• Thread size of 18 x 1.5 mm for direct fitment
• Overall length of 920 mm for proper installation
• Compatible with rear left and rear right positions depending on vehicle
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20099 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved fuel mixture monitoring. Its 4-wire configuration supports both sensor heating and signal transmission, enhancing durability and response accuracy. The square connector shape is designed to match factory wiring harnesses, reducing installation complexity. With a thread size of 18 x 1.5 mm and an overall length of 920 mm, this sensor fits securely in the designated rear left or rear right positions on compatible vehicles. This part number ES20099 is specifically compatible with Nissan Maxima, Sentra, and INFINITI I30 models, ensuring proper fit and function.

Purpose and Common Applications

• Monitors oxygen levels in exhaust gases to optimize air-fuel mixture
• Helps reduce harmful emissions by providing accurate feedback to the engine control unit
• Addresses issues such as poor fuel economy and rough idling
• Resolves check engine light triggers related to oxygen sensor faults
• Improves overall engine performance and emission compliance

Installation Notes and Tips

When installing the Delphi ES20099 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the included instruction sheet for guidance on locating the rear left or rear right sensor position specific to your Nissan or INFINITI model. Apply anti-seize compound to the sensor threads if recommended by the vehicle manufacturer to facilitate future removal. Confirm the square connector is fully seated to prevent signal interruptions. Proper torque should be applied to the 18 x 1.5 mm threaded sensor to avoid damage.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet stringent quality standards and OEM specifications. The ES20099 part number undergoes rigorous testing to ensure reliable performance and durability under various operating conditions. While specific warranty terms may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.