Delphi ES20172 Oxygen Sensor - Front, Rear, Rear Left or Rear Right

Delphi ES20172 Heated Oxygen Sensor Overview

The Delphi ES20172 is a heated oxygen sensor designed for precise emission control in select Nissan, Infiniti, and Suzuki vehicles. Engineered with a 4-wire configuration and a square connector shape, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor with 4 wires for reliable operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 470.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, rear, rear left, and rear right

Technical Details and Compatibility

The Delphi ES20172 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor response time and reducing emissions during cold starts. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. Its square connector shape and 18 x 1.5 mm thread size provide a secure and precise fit in the exhaust system. With an overall length of 470.0 mm, this sensor is designed to fit specific positions including front, rear, rear left, and rear right locations on compatible vehicles.

This oxygen sensor is compatible with a range of Nissan, Infiniti, and Suzuki models such as the Nissan Armada, Frontier, Pathfinder, TITAN, Xterra, NV1500, NV2500, NV3500, Infiniti QX56, and Suzuki Equator. The part number ES20172 should be referenced to ensure correct fitment for these vehicles.

Common Applications and Problem Resolution

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

Installation Notes and Tips

When installing the Delphi ES20172 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use the included instruction sheet for guidance on sensor positioning and connector attachment. Verify the thread size of 18 x 1.5 mm matches the vehicle’s exhaust port. Proper torque specifications should be followed to avoid sensor damage or exhaust leaks. Confirm the sensor’s position matches the vehicle’s required location (front, rear, rear left, or rear right) for optimal performance.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and accuracy. The ES20172 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. Refer to the product documentation or manufacturer for exact warranty terms.