Walker 250-241161 Oxygen Sensor - Downstream or Downstream Right

Overview of Walker 250-241161 Oxygen Sensor

The Walker 250-241161 oxygen sensor is designed specifically for select BMW models, including the 335i, 435i, and M3. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for BMW models such as 335i, 435i, M3, and more
• 18.50-inch wiring harness length with 20-gauge wire for durability
• Threaded mounting type with 18.0 mm thread diameter for secure installation
• Radiused polygon male connector for proper electrical connection
• Overall length of 21.65 inches to accommodate factory fitment

Walker Products OE Brand Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts designed to meet or exceed factory specifications. The Walker Products OE line ensures compatibility and performance for emission control components, making it a reliable choice for maintaining BMW vehicles’ emission systems.

Product Features and Specifications

The Walker 250-241161 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved sensor response. It includes a 4-wire configuration with 20-gauge wiring, providing stable signal transmission and durability. The wiring harness length of 18.50 inches and overall length of 21.65 inches are engineered to match the specific fitment requirements of BMW models such as the 335i, 435i, and M3 series. The sensor mounts via a threaded connection with an 18.0 mm diameter, ensuring a secure and leak-free installation. The radiused polygon male connector is designed to fit factory wiring harnesses precisely, reducing the risk of electrical issues.

Compatible BMW Models and Applications

• BMW 335i and 335i xDrive
• BMW 435i, 435i Gran Coupe, and 435i xDrive variants
• BMW 535i GT and 535i GT xDrive
• BMW 640i, 640i Gran Coupe, and 640i xDrive models
• BMW ActiveHybrid 3 and ActiveHybrid 5
• BMW i3, i3s, and i8 electric/hybrid models
• BMW M2, M3, M4, M235i, and M235i xDrive
• BMW X4, X5, and X6 SUVs

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 problems such as rough idling or hesitation
• Failed emissions tests related to sensor degradation

Installation Notes and Tips

When installing the Walker 250-241161 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the radiused polygon male connector aligns properly with the factory wiring harness to ensure a secure electrical connection. It is recommended to inspect the wiring harness for any damage before installation. Follow OEM torque specifications to avoid sensor or exhaust manifold damage.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part number 250-241161 undergoes rigorous testing to comply with emission control requirements. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in the product’s longevity and function.