InMotion WA512003 Wheel Bearing and Hub Assembly - Rear

Rear Wheel Bearing Hub Assembly for GM Applications

InMotion WA512003 is a rear wheel bearing and hub assembly built for direct replacement on a wide range of GM vehicles. It is engineered from OE data and measurements to match the original fit, wheel mounting geometry, and sensor integration required for dependable rear-end service.

With a 5-stud wheel pattern, 4-bolt flange, and included ABS sensor, this hub assembly supports accurate wheel mounting and wheel speed signal function on applications such as the Buick Lucerne, Cadillac DTS, Buick LeSabre, and Pontiac Bonneville.

Key Features

• Part number WA512003 rear wheel bearing and hub assembly
• Direct replacement design based on OE data and measurements
• Rear position application
• 5 wheel studs with 4 flange bolt holes
• ABS sensor included
• Flange diameter: 150.5 mm
• Bolt circle diameter: 115.0 mm / 4.53 in.
• Wheel pilot diameter: 70.1 mm
• Brake pilot diameter: 70.6 mm
• Hub pilot diameter: 71.8 mm
• Rectangular flange shape with 64.8 mm flange offset

Detailed Description

InMotion WA512003 is manufactured with high-precision processes and strict quality-control standards to deliver a rear hub assembly that matches the original mounting and sensor requirements of the vehicle. The assembly is designed for standard-grade rear applications across multiple GM platforms, including Fits 2006-2011 Buick Lucerne, rear; Fits 2006-2011 Cadillac DTS, rear; Fits 2000-2005 Buick LeSabre, rear; Fits 1997-2005 Buick Park Avenue, rear; Fits 2000-2005 Cadillac DeVille, rear; and Fits 2000-2005 Pontiac Bonneville, rear.

This part number WA512003 also covers additional rear applications such as the Cadillac Seville, Oldsmobile Aurora, Chevrolet Malibu, Pontiac Grand Am, Buick Riviera, Oldsmobile Cutlass, Cadillac Allante, Cadillac Eldorado, Oldsmobile Toronado, and Buick Reatta. It is built to restore proper wheel support and maintain correct hub-to-wheel alignment on the specified vehicles.

What This Part Helps Address

• Rear wheel bearing noise or rough rotation
• Excessive wheel play from a worn hub assembly
• ABS warning light concerns related to hub-mounted sensor function
• Improper wheel mounting caused by damaged studs or flange wear
• Vibration or instability from a failing rear hub

Installation Notes and Tips

Confirm rear-position fitment by year, make, and model before installation. Compare the flange bolt pattern, wheel stud count, pilot diameters, and ABS sensor configuration against the original part to ensure correct replacement. For best results, inspect the mating surfaces, fasteners, and related brake components during service, and follow the vehicle manufacturer’s torque specifications.

Quality Assurance

WA512003 is produced using OE-based dimensions and controlled manufacturing processes to support consistent fitment and service life. InMotion designs this wheel bearing and hub assembly as a direct replacement for the original rear hub on the listed applications.