NSK 43BWD03 Wheel Bearing - Rear

NSK 43BWD03 Rear Wheel Bearing

The NSK 43BWD03 is a rear wheel bearing built for select Lexus and Toyota rear-wheel-drive applications. It uses premium OE technology with vehicle-specific fit, form, and performance, along with a low-friction bearing design for smooth operation in demanding driving conditions.

Key Features

• Premium OE technology for vehicle-specific fit, form, and performance
• Long-life, low-friction bearing design with a superfinished, precision-matched raceway
• Premium all-weather grease for consistent lubrication
• Rear wheel bearing application
• ABS equipped: No
• Part number: 43BWD03

Detailed Description

NSK is known for advanced rolling bearing engineering and OE-level manufacturing support for major vehicle makers. The 43BWD03 rear wheel bearing is specified with a 43 mm inside diameter, 80 mm outside diameter, 50 mm inner race width, and 45 mm outer race width. It is a Generation 1 design intended for rear hub service on Lexus LS400, SC300, SC400, GS300, and Toyota Supra and Cressida applications that use this bearing specification. If you are searching for a rear wheel bearing for a 1990-2000 Lexus LS400, 1992-2000 Lexus SC300, or 1986-1998 Toyota Supra, NSK 43BWD03 is the direct part number to verify against your original bearing.

This part cross-references no listed alternate part numbers in the provided data.

What It Helps Address

• Rear wheel bearing noise such as humming or growling
• Excessive wheel play from worn bearing surfaces
• Rough rotation caused by degraded grease or raceway wear
• Vibration from a failing rear hub bearing assembly
• Service replacement for OE-style rear bearing wear on Lexus and Toyota rear applications

Installation Notes and Tips

Confirm the original bearing dimensions and rear position before installation. Match the inside diameter, outside diameter, and race widths to the removed part, and verify that the vehicle is not equipped with ABS at this bearing location. For best results, inspect the hub, seals, and related rear suspension components for wear before reassembly. This NSK 43BWD03 rear wheel bearing is used on 1990-2000 Lexus LS400 rear, 1992-2000 Lexus SC300 rear, 1992-2000 Lexus SC400 rear, 1986-1998 Toyota Supra rear, 1993-1997 Lexus GS300 rear, and 1989-1992 Toyota Cressida rear applications.

Quality Assurance

NSK manufactures advanced rolling bearings for global automotive OE and aftermarket use, with an emphasis on bearing life and operating performance under demanding conditions. The 43BWD03 reflects that OE-focused engineering approach for rear wheel service on select Lexus and Toyota models.