Westar ST-1928 Suspension Strut Bearing - Front

Suspension Strut Bearing for Front Applications

Westar ST-1928 is a front suspension strut bearing built for vehicles that rely on smooth strut rotation and stable steering response. It is a direct-fit service part for a wide range of Cadillac, Buick, Oldsmobile, and Pontiac front suspension applications, including Eldorado, Seville, Bonneville, and Park Avenue models.

Designed around the needs of the suspension system, this strut bearing helps the strut assembly pivot correctly, supports the locking connection between the strut and body, and reduces road noise and vibration transfer into the cabin.

• Provides a pivot point for the suspension to rotate smoothly
• Helps maintain correct suspension dynamics for steering response and tire wear control
• Locks the strut and body together at the mount interface
• Includes a noise-dampening function to reduce road vibration and cabin noise
• Built with application-specific materials and a protective finish for durability

Detailed Product Overview

Westar ST-1928 is engineered as a suspension strut bearing for front-end service on many GM passenger cars from the mid-1980s through the early 2000s. It is commonly selected for front strut bearing replacement on 1987-2002 Cadillac Eldorado, 1987-1999 Pontiac Bonneville, 1991-1996 Buick Park Avenue, and other listed front applications. This part number, ST-1928, is also cross-referenced with Monroe Shocks & Struts 901928 for the same application.

By allowing the strut to rotate as the steering system turns, the bearing helps preserve suspension geometry and reduces binding at the top of the strut assembly. That function is important on vehicles such as the Cadillac Seville, Oldsmobile 98, and Pontiac Grand Am, where front suspension movement and steering feel depend on a properly operating bearing.

What It Helps Address

• Steering bind or rough rotation at the top of the front strut
• Noise from worn or dry strut bearing surfaces
• Excess vibration transmitted through the suspension mount area
• Uneven tire wear related to poor suspension movement
• Loose or unstable front suspension feel during turning

Installation Notes and Fitment

Compatible with front applications only. Fits 1987-2002 Cadillac Eldorado, front; 1992-1999 Oldsmobile 88, front; 1996-1999 Oldsmobile LSS, front; 1987-1999 Pontiac Bonneville, front; 1997-1998 Oldsmobile Regency, front, exc. electronic adjustable suspension; 1992-1998 Pontiac Grand Am, front; 1995-1998 Pontiac Sunfire, front; 1987-1997 Cadillac Seville, front; 1995-1997 Oldsmobile Aurora, front; 1991-1996 Buick Park Avenue, front; 1985-1996 Oldsmobile 98, front; 1992-1994 Oldsmobile Achieva, front, exc. electronic suspension; 1993 Cadillac 60 Special, front; 1987-1993 Cadillac DeVille, front; 1991-1993 Cadillac Fleetwood, front; 1990-1992 Oldsmobile Toronado, front; 1986-1991 Oldsmobile Delta 88, front; and 1986-1990 Buick LeSabre, front.

Before installation, verify the vehicle’s suspension configuration and confirm whether the application excludes electronic adjustable or electronic suspension systems. Proper alignment inspection after strut service is recommended.

Quality Assurance

Westar positions this strut bearing as a quality replacement part made with application-specific materials and a finish intended to support long service life. The part number ST-1928 is built for front suspension service on the listed Cadillac, Buick, Oldsmobile, and Pontiac applications.