Walker 250-54104 Oxygen Sensor - Upstream Left or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-54104

The Walker Products OE Oxygen Sensor 250-54104 is designed specifically for Infiniti FX50 and QX70 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor with 4 wires for precise readings
• Specific fit for Infiniti FX50 and QX70 vehicles
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure wiring harness connection
• Wiring harness length of 16.26 inches and overall length of 19.8 inches
• 20 gauge wire for durability and reliable signal transmission

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-54104) is engineered to meet the exact specifications of Infiniti FX50 and QX70 models. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for maintaining proper air-fuel mixture and reducing emissions. The sensor includes a 4-wire configuration with 20 gauge wires, ensuring stable electrical connections and signal integrity. Its radiused polygon female connector is designed for a secure fit with the vehicle’s wiring harness, minimizing the risk of disconnection or corrosion. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and a tight seal within the exhaust system. With an overall length of 19.8 inches and a wiring harness length of 16.26 inches, this sensor fits precisely without excess slack or strain.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that match or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with Infiniti’s original components. The OE designation indicates that this sensor is designed for direct replacement, maintaining the integrity of the vehicle’s emission control system.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper engine management
• Helps resolve rough idling caused by faulty oxygen sensors
• Reduces increased emissions and failed emissions tests
• Improves fuel efficiency by maintaining correct air-fuel ratio
• Eliminates check engine light codes related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools for threaded sensor removal and installation
• Verify connector type matches the vehicle’s wiring harness (radiused polygon female)
• Do not over-tighten the sensor to prevent thread damage
• Check for exhaust leaks after installation to ensure proper sealing

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emissions regulations and supports the longevity of the vehicle’s emission control system.