Walker 250-21015 Oxygen Sensor - Upstream

Overview of Walker 250-21015 Oxygen Sensor

The Walker 250-21015 oxygen sensor is designed specifically for select BMW, Jaguar, and Saab models, including the BMW 318i, 320i, 528e, 528i, 533i, Saab 900, and Jaguar XJ6. This non-heated oxygen sensor provides precise emissions control by monitoring exhaust gases and ensuring optimal engine performance.

• Wiring harness length: 33.98 inches
• Wire gauge measurement: 20 gauge
• Sensor type: Non heated
• Specific fit for select BMW, Jaguar, and Saab models
• Single wire configuration
• Radiused polygon female connector
• Thread diameter: 18.0 mm
• Overall length: 37.52 inches
• Threaded mounting type for secure installation

Walker Products OE Brand Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on providing original equipment quality parts designed to meet or exceed factory specifications. The Walker Products OE line ensures compatibility and reliable performance for emission control components, making it a suitable replacement for the oxygen sensors in BMW, Jaguar, and Saab vehicles.

Product Description and Specifications

The Walker 250-21015 oxygen sensor features a non-heated design with a single 20-gauge wire, making it compatible with specific vehicle applications that do not require a heated sensor. The sensor includes a radiused polygon female connector, ensuring a secure and precise connection to the vehicle’s wiring harness. With a wiring harness length of 33.98 inches and an overall length of 37.52 inches, this sensor is engineered for proper fitment and ease of installation. The threaded mounting type with an 18.0 mm thread diameter allows for a secure attachment to the exhaust system.

Compatible Vehicles and Applications

• BMW 318i, 320i, 528e, 528i, 533i
• Jaguar XJ6
• Saab 900

Common Issues Addressed by This Oxygen Sensor

• 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 failure

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly torque the sensor to manufacturer specifications to prevent exhaust leaks.

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 250-21015 part number is backed by Walker’s quality assurance processes, providing confidence in fitment and function for BMW, Jaguar, and Saab vehicles. Please refer to Walker’s warranty policy for specific coverage details.