NSK 40BWD12 Wheel Bearing - Front or Rear

NSK 40BWD12 Wheel Bearing for Toyota and Scion

The NSK 40BWD12 is a front or rear wheel bearing application for select Toyota, Scion, Pontiac, and Prius models. Built with vehicle-specific OE technology, it supports smooth wheel rotation, low friction operation, and dependable sealing in demanding daily driving conditions.

Key Features

• Premium OE technology for vehicle-specific fit, form, and performance
• Superfinished, precision-matched bearing raceway for low-friction operation
• Advanced multi-lip seal technology for water and contamination resistance
• Sealed-for-life design with premium all-weather grease for zero maintenance
• ABS equipped: No
• Inside diameter: 40 mm; outside diameter: 74 mm; width: 42 mm

Detailed Description

NSK 40BWD12 is a sealed wheel bearing engineered for consistent performance and long service life. NSK supplies advanced rolling bearing products to global vehicle manufacturers, and this part reflects that OE-focused approach with a precision raceway, durable sealing, and low-friction operation. It is a direct-fit wheel bearing for applications such as Toyota Corolla, Toyota Matrix, Pontiac Vibe, Scion tC, Toyota Celica, Toyota MR2 Spyder, and Toyota Prius, with coverage across front and rear positions depending on the vehicle.

This part number, 40BWD12, is a practical choice when replacing a noisy, rough, or worn wheel bearing on a Toyota Corolla front hub assembly or a Toyota MR2 Spyder rear application. This part cross-references no listed aftermarket part numbers in the provided data.

What It Helps Fix

• Wheel bearing growl or humming that increases with vehicle speed
• Excessive wheel play or looseness at the hub
• Rough rotation caused by bearing wear or contamination
• Seal failure that allows water, dirt, or road debris into the bearing
• Maintenance issues related to serviceable bearing designs

Installation Notes and Tips

Verify the vehicle position before ordering, since this bearing is used in both front and rear applications across the listed fitments. Confirm hub dimensions and ABS requirements during diagnosis; this part is listed as not ABS equipped. Proper press-fit installation and clean mating surfaces are important for bearing life and quiet operation.

Quality Assurance

NSK is a global bearing manufacturer with OE-level engineering focus and production experience serving major automakers. The 40BWD12 uses sealed-for-life construction, premium grease, and multi-lip sealing to support reliable service in everyday driving.