starter

A starter motor (also starting motor, or starter) is an electric motor that rotates an internal combustion engine to cause the engine to begin powering itself.

shift knob

A shift knob also known as a gear knob, gear shift knob and stick shift knob is the physical interface between the manual transmission stick shift and the drivers hand.

safari rack

A basket type rack placed on roof racks. Typicalled used for more storage space. Popular with trucks and suv’s that go offroading.

STEERING STABILIZERS

Steering stabilizers are essentially a shock absorber for your steering system. They are highly recommended for all vehicles with over-sized tires, a winch or snow plow to increase control and handling. Stabilizers dampen out wheel shimmy and help prevent the steering wheel from being jerked out of your hands in rough terrain or when a road hazard is struck by the front wheels.  A steering stabilizer is a proven safety device in the event of a blow out.

spark plug

An electrical device that fits into the cylinder head of some internal combustion engines and ignites compressed fuels such as, aerosol gasoline, Ethanol, and Liquefied petroleum gas by means of an electric spark.

spoiler

A spoiler is an automotive aerodynamic device whose intended design function is to ’spoil’ unfavorable air movement across a body of a vehicle in motion. Spoilers on the front of a vehicle are often called air dams, because in addition to directing air flow they also reduce the amount of air flowing underneath the vehicle which reduces aerodynamic lift. Spoilers are often fitted to race and high-performance sports cars, although they have become common on passenger vehicles as well. Some spoilers are added to cars primarily for styling purposes and have either little aerodynamic benefit or even make the aerodynamics worse.

via wikipedia

suicide doors

car door that is hinged on the edge closer to the rear of the vehicle

Strut Bar

A strut bar is a mostly aftermarket car suspension accessory usually used in conjunction with MacPherson struts on monocoque or unibody chassis to provide extra stiffness between the strut towers.