NSK 45BWD15B Wheel Bearing - Rear

Overview of NSK 45BWD15B Wheel Bearing for BMW Models

The NSK 45BWD15B wheel bearing is designed specifically for select BMW vehicles, including the 1 Series M, 135i, 325xi, 328i, and M3 models. This wheel bearing features an integrated magnetic encoder for ABS systems, ensuring precise wheel speed monitoring and compatibility with factory ABS components.

• Compatible with BMW 1 Series M, 135i, 325xi, 328i, 330i, 335i, M3, and related models
• ABS equipped with magnetic encoder for accurate sensor feedback
• Inside diameter: 45 mm, outside diameter: 85 mm, width of outer race: 41 mm
• Generation 1 design for reliable performance and fitment
• Part number 45BWD15B ensures exact replacement for specified vehicles

Technical Details and Specifications

The NSK 45BWD15B wheel bearing is engineered with a 45 mm inside diameter and an 85 mm outside diameter, providing a precise fit for the wheel hub assembly on compatible BMW models. The 41 mm width of the outer race contributes to the bearing's structural integrity and load distribution. This bearing includes a magnetic encoder tone ring, which is essential for ABS-equipped vehicles, allowing the ABS sensor to accurately detect wheel speed and maintain vehicle stability during braking.

Applications and Problem Resolution

This wheel bearing is intended for use in the driveline and axle system of BMW vehicles, particularly those equipped with ABS systems requiring a magnetic encoder. It addresses common issues such as:

• Wheel noise or grinding caused by worn or damaged bearings
• ABS warning lights triggered by faulty wheel speed sensor signals
• Vibration or uneven tire wear due to bearing play or failure
• Reduced steering precision and handling instability
• Potential wheel hub assembly damage from bearing failure

Installation Notes and Tips

When installing the NSK 45BWD15B wheel bearing, ensure the hub and surrounding components are clean and free of debris. Proper torque specifications should be followed to avoid premature bearing wear. Since this bearing includes a magnetic encoder, care must be taken to avoid damaging the tone ring or sensor during installation. It is recommended to verify ABS sensor functionality after installation to confirm proper operation.

Quality Assurance and Warranty

NSK manufactures the 45BWD15B wheel bearing to meet OEM standards for durability and performance. While specific warranty details are not provided here, NSK products typically come with manufacturer-backed quality assurance to support reliability in demanding automotive applications. Using this part ensures compatibility and maintains the integrity of the ABS system on BMW 1 Series M, 135i, 328i, M3, and other compatible models.