/live/media/WS/WS_ST3921_Fro.jpg)
Westar ST-3921 Suspension Strut Mount - Rear
| Brand | Westar ST-3921 |
|---|---|
| Position | Rear |
| Bullet 1 | Provides a pivot point for the suspension to rotate on, to allow |
| Bullet 2 | Provides a locking mechanism to lock the strut and body together |
| Bullet 3 | Provides a noise dampening system to prevent noise and vibrations |
| Fits | BMW · 17 vehicles |
OE-style replacement. Application-specific strut mount built for secure suspension attachment.
Noise reduction. Helps isolate road vibration and limit cabin noise transfer.
Protective finish. Surface treatment helps preserve appearance and extend service life.
Cross-references Anchor 703921, Gabriel 143262 and KYB SM5251 for the same application. See all 6.
Suspension Strut Mount for BMW Rear Fitment
Westar ST-3921 is a suspension strut mount built for rear applications on select BMW 5 Series models. It provides the mounting interface that helps the strut assembly rotate correctly, reduce road noise, and maintain suspension geometry.
Key Features
- Provides a pivot point for suspension movement to support steering response and reduce uneven tire and component wear.
- Locks the strut and body together for secure mounting.
- Includes a noise-dampening function to reduce vibration transfer into the cabin.
- Finished to help protect the mount and maintain appearance over time.
- Westar ST-3921 is built with application-specific materials for the intended fitment.
Detailed Description
This suspension strut mount is engineered for rear use on compatible BMW 525i, 530i, 540i, and 528i applications. Fits 2001-2003 BMW 525i, rear; Fits 2001-2003 BMW 530i, rear, exc elec adj suspension; Fits 1999-2003 BMW 540i, rear; Fits 1998-2000 BMW 528i, rear; Fits 1997-1998 BMW 540i, rear, exc elec adj suspension; Fits 1996 BMW 528i, rear, Exc Elec Adj Suspension. The mount helps isolate vibration while keeping the strut assembly properly located, which is important for consistent suspension operation on BMW 5 Series vehicles. Part number ST-3921 is also referenced by several aftermarket brands for the same application.
What It Is Used For
- Reducing suspension noise transmitted through the body.
- Maintaining proper strut alignment and rotation.
- Supporting stable suspension geometry during driving.
- Addressing worn or noisy upper strut mounting points.
- Restoring secure strut-to-body attachment.
Installation Notes and Tips
Verify rear suspension configuration before ordering, especially on 530i, 540i, and 528i models with electronic adjustable suspension exclusions noted in fitment. Compare the original mount and suspension layout to confirm application match. Professional installation is recommended for proper suspension service and alignment checks after replacement.
Quality Assurance
Westar states that it uses high-quality materials and a protective finish to support durability and appearance. Part number ST-3921 cross-references Monroe Shocks & Struts 903921 for the same application.
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2003 | BMW | 525i | Sedan | Rear | — |
| 2003 | BMW | 530i | — | Rear | exc elec adj suspension |
| 2003 | BMW | 540i | — | Rear | — |
| 2002 | BMW | 525i | Sedan | Rear | — |
| 2002 | BMW | 530i | — | Rear | exc elec adj suspension |
| 2002 | BMW | 540i | — | Rear | — |
| 2001 | BMW | 525i | Sedan | Rear | — |
| 2001 | BMW | 530i | — | Rear | exc elec adj suspension |
| 2001 | BMW | 540i | — | Rear | — |
| 2000 | BMW | 528i | — | Rear | — |
| 2000 | BMW | 540i | — | Rear | — |
| 1999 | BMW | 528i | — | Rear | — |
| 1999 | BMW | 540i | — | Rear | — |
| 1998 | BMW | 528i | — | Rear | — |
| 1998 | BMW | 540i | — | Rear | exc elec adj suspension |
| 1997 | BMW | 540i | — | Rear | exc elec adj suspension |
| 1996 | BMW | 528i | — | Rear | Exc Elec Adj Suspension |
| No rows match your filter. | |||||