Walker 250-24390 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker 250-24390 Oxygen Sensor for BMW Models

The Walker 250-24390 oxygen sensor is designed specifically for select BMW vehicles, including the 318i, 318is, 318ti, 750iL, and X5. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for BMW 318i, 318is, 318ti, 750iL, and X5 models
• 26.69-inch wiring harness length with 20-gauge wire for durability
• Threaded mounting type with 18.0 mm thread diameter for secure installation
• Radiused polygon female connector for proper electrical connection
• Overall length of 30.24 inches to accommodate factory fitment

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-24390) features a heated sensor type that allows for faster warm-up times and improved emissions monitoring. The 4-wire configuration supports both the sensor element and the heater circuit, ensuring consistent performance under various operating conditions. The wiring harness length of 26.69 inches and 20-gauge wire gauge measurement provide sufficient reach and durability for the specified BMW models. The sensor’s threaded mounting type with an 18.0 mm thread diameter ensures a secure and proper fit in the exhaust system. Additionally, the radiused polygon female connector is designed to match the original equipment specifications, facilitating straightforward installation without modifications.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering direct-fit emission control components that meet original equipment standards. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with factory-installed parts. Using a Walker Products OE sensor helps maintain the integrity of your BMW’s emissions system and supports compliance with environmental regulations.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for improved fuel efficiency
• Resolves check engine light issues related to oxygen sensor faults
• Helps correct rough idling or engine hesitation caused by faulty sensors
• Supports proper catalytic converter function by providing accurate exhaust data
• Prevents increased emissions due to sensor failure or degradation

Installation Notes and Tips

Installation of the Walker 250-24390 oxygen sensor requires removal of the old sensor from the threaded mounting location in the exhaust manifold or pipe. Ensure the engine and exhaust system are cool before beginning work. The radiused polygon female connector should be connected securely to the vehicle’s wiring harness without forcing. Verify the wiring harness length and connector type match the original sensor to avoid fitment issues. Use appropriate tools to avoid damaging the sensor or threads during installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet or exceed OEM specifications for fit, form, and function. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and engine performance in your BMW 318i, 318is, 318ti, 750iL, or X5.