Control Arms Also called as ‘wishbone’ or ‘A’ arm, control arm is a triangular sub frame that has rotatable shafts at both the ends. The bigger end of the triangle is used for connecting the frame with pivots located on a bushing. While the other end is used for joining the steering knuckle with the pivots placed on a ball joint. In simpler terms, control arms are the pivotal components of automobile suspension system like Link Control Arms, which are used for linking steering knuckles to the chassis or sub-frame, thereby ensuring up and down movement of the knuckles.

In the automobile suspension and steering systems, idler arms are the rods having shafts at its ends, which are used for providing support to the tie rods. It is also used for transmitting steering motion to both the wheels via the ends of the tie rod. These arms have rods, which is connected to frame of the vehicle at one end and provides support to the ball joint at the other end. Both idler arm and pitman arm are used for supporting the movement of the steering linkage in the direction operated by the steering gear.

Motor Mounts are the rubber-coated brackets that are used for holding the engine and transmissions to the frame of the vehicle thereby absorbing the engine vibrations. These mounts are installed in automobiles to prevent unwanted oscillations and wheel hops that could hamper the working of the transmission. Motor mounts are made of a rubber pad having a stud at both the sides. One stud comprises of a nut, which is screwed from the backside while the other one is attached to the motor bracket.

Pinions refers to a gear having small number of teeth intertwined together in a bigger wheel or a rack. The pinion gear rotates and spins with the steering shaft thus resulting in the movement of rack from left to right. Pinions move the rack to the left or right only when the steering wheel is turned.

Pitman arms It is an arm, which is attached to the steering box sector shaft that assists the movement of a steering wheel. These are used on the rear wheel drive automobiles equipped with conventional suspension systems and parallelogram steering. It is basically a type of lever that coverts torque into mechanical force facilitating the smooth movement of the steering linkage. This important component of the automobile steering system is supported by the sector shaft and has a drag link that is supported by ball joint. Moreover, Pitman arms turn the angular movement of sector shaft into linear movement that is required for steering the wheels.

Shock Absorbers are the mechanical devices having springs located in the balance wheel bearings which are used for preventing the vehicle from getting bumps. Also known as damper, shock absorbers smoothen a sudden shock impulse and disperse kinetic energy. Shock absorbers installed in a vehicle decrease the effect of traveling over uneven and rough ground, resulting in the better ride quality. Mostly shock absorbers make use of coil springs, leaf springs and torsion springs.

Automobile suspension and steering system make use of many kinds of springs that helps the vehicle to move comfortably and adapt to the uneven road conditions. The springs used by an automobile contract when the wheels come in contact with a bump and expand when it hits a dip.

Suspension Beams also known as torsion spring suspension, this type of suspension make use of torsion bars that are capable of bearing any type of weight. Its one end is connected to the vehicle chassis while the other end is linked to a suspension arm, axle or spindle. Mostly trucks and SUV’s make use of torsion bars. These bars are durable, easy to install, adjustable and provides larger travel as compared to leaf spring systems.

Transmission Mounts Also known as the transfer cases for four wheelers, transmission mounts are the integral part of vehicles, which forms the rear support of the engine or transmission assembly, and offers the right operating angle for the front of the driveshaft.

Steering Column comprises of machinery or mechanical devices, which are used for steering an automobile. In the steering column assembly, the steering column shaft is usually attached to two needle bearings fastened in rubber mountings. Another important component of the steering column is wiring connectors. These are the devices used for connecting different wires used in automobile steering assembly.

Steering Wheels Commonly referred to as hand wheel or driving wheel, this device is an integral part of automotive steering system that is controlled and operated by the driver of the vehicle. This type of steering control is used in almost all type of automobiles ranging from mass production vehicles to light as well as heavy trucks. Steering wheel is round shaped wheel, which is connected to steering columns with the help of one or more spokes. This is a hand-operated Steering wheel pads especially designed to control the direction and movement of the wheels or rudder of a vehicle.

Steering Parts includes all those devices or tools such as steering boxes, steering shafts, wire connectors, which are used for building or assembling the steering system of an automobile. All these steering parts have different uses and functions. Basic types of steering parts are:

Steering Mechanism By steering mechanism we mean a system composed of various devices and components which are used for steering a motor vehicle. Power steering is the widely used mechanism in the automobile in which engineer power expands the torque applied to the steering wheel. Power steering pumps used in steering mechanism comprises of retractable a vane that is driven by the car's engine via a belt and pulley.