Strut Mount
A mounting component that secures the strut assembly to the vehicle's body/chassis, often including a bearing to allow the strut to pivot during steering.
A strut mount is a critical suspension component that connects the top of a MacPherson strut assembly to the vehicle's metal body or strut tower. It consists of a heavy-duty metal plate bonded to a thick rubber insulator block. The rubber block serves to dampen road shocks and isolate road noise and vibration, preventing them from transferring directly to the passenger cabin.
On the front wheels, which must turn for steering, the strut mount also contains a specialized bearing. This bearing allows the entire strut assembly (including the coil spring and shock absorber) to pivot smoothly as the driver turns the steering wheel. Without this bearing, the spring would bind and the steering would feel stiff, heavy, or jerky.
Like all rubber components, strut mounts gradually degrade, harden, and crack over time due to constant load and road impacts. Signs of a worn strut mount include clunking or knocking noises when driving over bumps, a squeaking or popping sound when turning the steering wheel, stiff steering, or uneven tire wear. When replacing struts, it is highly recommended to replace the strut mounts and bearings at the same time.