InMotion WA512004 Wheel Bearing and Hub Assembly - Rear

Rear Wheel Bearing Hub Assembly for GM W-Body

InMotion WA512004 is a rear wheel bearing and hub assembly built for direct replacement on select GM W-body vehicles. It is engineered from OE data and measurements for fitment, performance, and service life, with an integrated ABS sensor and a 5-stud hub layout.

Key Features

• Rear wheel bearing and hub assembly for the rear position
• Integrated anti-lock brake sensor included
• 5 wheel studs with 4 flange bolt holes
• Flange diameter: 150.5 mm; flange offset: 64.8 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 for designated applications
• InMotion WA512004 direct replacement design

Fitment

• Fits 1989-1996 Buick Regal, rear, Standard Grade
• Fits 1992-1996 Chevrolet Lumina, rear, Standard Grade
• Fits 1995-1996 Chevrolet Monte Carlo, rear, Standard Grade
• Fits 1989-1996 Oldsmobile Cutlass Supreme, rear, Standard Grade
• Fits 1989-1996 Pontiac Grand Prix, rear, Standard Grade

Product Details

This InMotion wheel bearing and hub assembly is manufactured with high-precision processes and strict quality-control criteria to match the original application. The WA512004 is built for rear-wheel service on Buick Regal, Chevrolet Lumina, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix models listed above, making it a practical OE-style replacement for vehicles that require an ABS-equipped rear hub. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Replacing a worn rear hub bearing on a Buick Regal, Chevrolet Lumina, or Pontiac Grand Prix
• Restoring proper wheel mounting and hub support at the rear axle
• Addressing ABS warning concerns related to a failed hub sensor
• Correcting noise, looseness, or rough rotation from a deteriorated bearing assembly
• Replacing a damaged rear hub on a Chevrolet Monte Carlo or Oldsmobile Cutlass Supreme

Installation Notes

Verify rear fitment, bolt circle, and pilot dimensions before installation. Compare the existing hub, ABS sensor connection, and flange measurements to the specifications listed for WA512004. Clean the mounting surface and inspect related brake and suspension components during service to help ensure proper alignment and operation.

Quality Assurance

InMotion manufactures this hub assembly using OE-based measurements and controlled production standards to support consistent fitment and durability. WA512004 is built as a direct replacement part for the listed applications.