Walker 250-241294 Oxygen Sensor - Downstream or Downstream Right

Overview of Walker OE Base Sensor Oxygen Sensor

The Walker OE Base Sensor 250-241294 is a heated narrow-band oxygen sensor designed specifically for select BMW models. Engineered to meet original equipment specifications, this sensor ensures accurate air-fuel mixture readings for optimal engine performance and emissions control.

• Heated oxygen sensor for faster response times
• Narrow-band sensor type for precise air-fuel ratio monitoring
• Specific fitment for BMW models including 230i, 330i, 430i, X3, X5, and more
• Four-wire design with spade terminals and female oblong connector
• Thread size M18 x 1.5 with 22mm wrench size for installation

Detailed Product Features and Specifications

This Walker oxygen sensor features a heated element to reduce warm-up time, allowing the sensor to provide accurate readings shortly after engine start. The narrow-band sensor type is designed to detect oxygen levels in the exhaust gases, enabling the engine control unit to adjust fuel delivery for efficient combustion. The sensor includes four wires with male terminals and a female oblong connector, ensuring a secure and reliable electrical connection. Its thread size of M18 x 1.5 and 22mm wrench size make it compatible with the designated BMW models listed in the fitment.

The OE Base Sensor product line by Walker focuses on delivering sensors that meet or exceed original equipment standards. This ensures that the 250-241294 oxygen sensor maintains factory-level performance and durability, making it a suitable replacement part for emission control systems in BMW vehicles.

Compatible BMW Models and Applications

• BMW 230i and 230i xDrive
• BMW 330e, 330e xDrive, 330i, and 330i xDrive
• BMW 430i, 430i Gran Coupe, 430i xDrive, and 430i xDrive Gran Coupe
• BMW 530e, 530e xDrive, and 530i xDrive
• BMW 750i xDrive, Alpina B8 Gran Coupe, Alpina XB7
• BMW M550i xDrive, M850i xDrive, M850i xDrive Gran Coupe
• BMW X3, X4, X5, X6, X7, and Z4

Common Issues Addressed by This Oxygen Sensor

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

Installation Notes and Tips

When installing the Walker OE Base Sensor 250-241294, ensure the vehicle is cool to avoid burns. Use a 22mm wrench to remove the old sensor and install the new one with the M18 x 1.5 thread size. Confirm the four-wire connector matches the vehicle’s harness, noting the female oblong connector and male spade terminals for proper connection. Avoid over-tightening to prevent damage to the sensor or exhaust manifold.

Quality Assurance and Warranty

Walker OE Base Sensors are manufactured to meet original equipment standards, providing reliable performance and durability. While specific warranty details are not provided here, Walker products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.