Bearings are anti-friction devices that support a component that rotates (a shaft), slides, or oscillates in or on it. Usually made of hard metal, often lubricated with grease, and found between two moving parts. Wheel Bearings, which are located on the wheel hub, are components that help decrease friction when the wheel is turning, absorbing axial and radial forces. Although wheel bearings are sealed, wear can damage the seal and allow debris and moisture inside. They are packed with grease to prevent wear from the friction produced by the turning wheels. When this happens, the bearings will fail and create noise, and you will need to replace them as soon as possible.

Belt Tensioners

The Belt Tensioner maintains the proper tension on the timing belt, compensating the effect of the shock loads of the AC compressor and some other auxiliary components. Timing belt failures are usually a result of a worn timing belt tensioner.


They are protective liner or sleeve cushions noise, friction, or movement. Suspension bushings are often made from two pipes (one inside the other) with a sleeve of rubber in the space between the two pipes. They should regularly be lubricated and replaced when cracked or broken.

Center Bearings

The center support bearing of a vehicle helps support the longer drive shaft that some cars use, for precise driveshaft alignment and support. They are divided into two sections to prevent warping; these longer shafts sit in the bearing between the transmission and rear differential.

Control Arms

The Control Arm is a metal Strut on the suspension located at the top and bottom of the wheel spindle. The upper and lower control arms allow the front wheels to change direction. Also called a wishbone or A-arm, allowing the wheel to move freely in case of sudden changes of direction or bumps.

Engine Mounts

The support that connects the transmission and engine to the vehicle’s chassis, preventing the engine from rotating on its torque. It is composed of rubber and steel; the engine mounts absorb the motion (twisting, vibrating, etc.) produced by the operation of the engine and transmission. They also assist in reducing the noise and motion transmitted to the passenger compartment. The most efficient mounts recently developed are the hydraulic mount, in some cases electronically controlled.


The Pulley helps regulate how your car’s belts run, and it guides the belt and chain. It may contain bearings that wear out over time with normal driving. When this happens, the pulley can easily be replaced along with the belts it runs.

Strut Mounts

A Strut Mount is a single, self-contained pivoting suspension unit that integrates a coil spring with a shock absorber, and is critical for a correct functioning of your suspension system and load-bearing support. Struts are used on front wheel drive automobiles and in four-wheel drive cars.

Wheel Hubs

Also referred to as hub assembly, wheel hub unit, is an automotive part located between the brake drums or discs and the drive axle. On the axle side, it is mounted to the holding bracket from the chassis; on the disc side, the wheel is mounted to the bolts of the WHA. When replacing, a wheel hub assembly should be torqued to the vehicle’s specifications to prevent failure.