Walker 250-24103 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker Products OE Oxygen Sensor 250-24103

The Walker Products OE Oxygen Sensor 250-24103 is designed specifically for select INFINITI and Nissan vehicles, including the 200SX, 240SX, Altima, Q45, and Sentra models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine control unit.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for INFINITI and Nissan models such as 200SX, 240SX, Altima, Q45, and Sentra
• Threaded mounting type with 18.0 mm thread diameter for secure installation
• 9.37-inch wiring harness length with radiused polygon male connector
• Wire gauge measurement of 20 for durability and signal integrity
• Overall length of 12.91 inches to accommodate factory fitment requirements

Detailed Product Description

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-24103 oxygen sensor is a heated sensor, which allows it to reach operating temperature quickly, improving emissions control and fuel efficiency. Its 4-wire configuration includes two wires for the heater circuit and two for the sensor signal, ensuring accurate and consistent readings. The sensor’s threaded mounting type with an 18.0 mm diameter provides a secure and precise fit in the exhaust system. The wiring harness length of 9.37 inches and the radiused polygon male connector are designed to match the factory harness, simplifying installation and maintaining electrical integrity.

Compatible Vehicles and Applications

This oxygen sensor is compatible with specific INFINITI and Nissan vehicles, including:

• INFINITI Q45
• Nissan 200SX
• Nissan 240SX
• Nissan Altima
• Nissan Sentra

It is engineered to replace the original sensor in these models, ensuring proper fit and function.

Common Issues Addressed by Oxygen Sensor 250-24103

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor degradation

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-24103, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the connector type matches the factory harness to avoid electrical issues. Thread the sensor carefully to prevent cross-threading and torque to manufacturer specifications. Inspect wiring for damage and secure the harness to prevent movement or abrasion.

Quality Assurance and Warranty

Walker Products OE parts are manufactured to meet original equipment standards, providing reliable performance and durability. The 250-24103 oxygen sensor undergoes rigorous testing to ensure consistent operation under various conditions. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary by region.