Delphi ES20151 Oxygen Sensor - Front, Front Left or Front Right

Delphi ES20151 Heated Oxygen Sensor Overview

The Delphi ES20151 is a heated oxygen sensor designed for precise emission control in select Ford, Lincoln, Mazda, and Mercury vehicles. This sensor helps maintain optimal engine performance and reduces harmful emissions by accurately monitoring oxygen levels in the exhaust system.

• Heated sensor type for faster warm-up and improved accuracy
• 4-wire design ensuring reliable electrical connections
• Round connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicle models
• Overall length of 390.0 mm for proper installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, front left, and front right

Detailed Product Description

The Delphi ES20151 oxygen sensor features a heated element that allows the sensor to reach operating temperature quickly, improving fuel efficiency and emission control. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The round connector shape and standard 18 x 1.5 mm thread size provide compatibility with various Ford, Lincoln, Mazda, and Mercury models, including the Ford Explorer, Ranger, and E-350 Super Duty, as well as the Lincoln Navigator and Mazda B4000. The sensor’s overall length of 390 mm is designed to fit precisely in the front exhaust positions, whether front left or front right, depending on the vehicle’s specific requirements. The package includes the oxygen sensor and an instruction sheet to assist with proper installation.

Common Applications and Issues Addressed

• Helps resolve rough idling caused by incorrect air-fuel mixture
• Reduces increased fuel consumption due to faulty oxygen sensor readings
• Prevents check engine light triggers related to emission control faults
• Improves exhaust emissions compliance for Ford Explorer and Lincoln Navigator
• Supports proper engine performance in Mazda B4000 and Mercury Mountaineer

Installation Notes and Tips

• Ensure the sensor is installed in the correct front position (left or right) as specified for your vehicle
• Use proper tools to avoid damaging the 18 x 1.5 mm threaded fitting
• Disconnect the battery before installation to prevent electrical shorts
• Follow the included instruction sheet carefully for wiring and connector alignment
• Verify sensor connector is securely attached to avoid signal interruptions

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications for durability and performance. The ES20151 is tested for 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.