Delphi ES20129 Oxygen Sensor - Rear

Overview of Delphi ES20129 Heated Oxygen Sensor

The Delphi ES20129 is a heated oxygen sensor designed for precise emission control in Nissan Frontier and Xterra vehicles. This rear-position sensor features a 4-wire configuration and a square connector shape, ensuring reliable performance and compatibility with specific Nissan models.

• Heated oxygen sensor for accurate exhaust gas monitoring
• 4-wire design for improved signal stability
• Square connector shape for secure electrical connection
• Thread size of 18 x 1.5 mm for proper fitment
• Overall length of 740 mm to reach rear exhaust location
• Includes oxygen sensor and instruction sheet

Detailed Product Description

The Delphi ES20129 oxygen sensor is engineered to meet the emission control requirements of Nissan Frontier and Xterra models. Its heated sensor type allows for faster warm-up times, improving fuel efficiency and reducing emissions shortly after engine start. The 4-wire configuration supports both the sensor signal and heater circuit, enhancing responsiveness and durability. The square connector shape ensures a secure and corrosion-resistant connection, while the 18 x 1.5 mm thread size guarantees proper installation in the rear exhaust position. With an overall length of 740 mm, this sensor is designed to fit precisely in the designated rear location, maintaining optimal sensor performance.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate feedback to the engine control unit
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor replacement to avoid burns
• Use the correct 18 x 1.5 mm thread size to avoid cross-threading
• Verify the square connector matches the vehicle’s wiring harness for proper fit
• Follow the included instruction sheet for torque specifications and wiring connections
• Clear any diagnostic trouble codes after installation to reset the engine control unit

Quality Assurance and Warranty

Delphi manufactures the ES20129 oxygen sensor to meet OEM standards for durability and performance. The sensor undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship, providing confidence in the sensor’s long-term functionality.