Cubic-inch Displacement (Cu. In.)

The volume swept by all the pistons inside the cylinders of a reciprocating engine in a single movement from top dead center (TDC) to bottom dead center (BDC). Abbreviated as Cu. In.

Cross Members

Support braces under a trailer floor. These are often referred to as x-members and are measured from center to center.

Convertible (Cnvt) (Conv)

An automobile body style that can convert between an open-air mode and an enclosed one, varying in degree and means by model. Often abbreviated as Cnvt or Conv.

Coal Door

Small openings in a dump trailer’s tailgate operating independently of the tailgate. A coal door allows for a smaller and more controlled discharge of material without opening the entire [...]

Chassis

A chassis consists of an internal vehicle frame that supports a man-made object in its construction and use.