A single flexible drive belt that provides a drive from the engine crankshaft to all ancillary components. Replaces a series of individual belts.

A servo mechanism (informal)

Ram cylinder that supplements physical forces in operating a control (as for example steering, a brake or clutch), either by direct mechanical amplification or by external power assistance.

System or device that supplements physical forces in operating a control (as for example a brake or clutch), either by direct mechanical amplification or by external power assistance.

A motor that supplements physical forces in operating a control.

Service Engine Soon (light)

Gravity separation of one or more components from a paint and the resulting layer of material on the bottom of a container.

Sequential Fuel Injection

Part of a leaf spring suspension system that allows movement (swinging shackle) or is fixed to the chassis (fixed shackle).

Allows for changes in length between the ends of a leaf spring as suspension moves.