On an automobile, a quarter panel (or rear wing in the case of a rear quarter-panel) is usually considered the body panel that covers the section between the rear door and the trunk; however, the front section, between the door and wrapping around the hood, is also considered a quarter panel (or fender). It is typically made of sheet metal, but is sometimes made of fiberglass

Fiberglass

Glass fiber is a material consisting of numerous extremely fine fibers of glass.Glassmakers throughout history have experimented with glass fibers, but mass manufacture of glass fiber was only made possible with the invention of finer machine tooling...

 and fibre-reinforced plastic

Fibre-reinforced plastic

Fibre-reinforced plastic is a composite material made of a polymer matrix reinforced with fibres. The fibres are usually fibreglass, carbon, or aramid, while the polymer is usually an epoxy, vinylester or polyester thermosetting plastic...

. It typically wraps around the wheel well, although this varies with different makes and models. Damage to a quarter panel usually requires the affected areas to be cut out (if it is severe), hammered out and bonding compound to be applied and molded to the desired shape.

The use of this body panel as a housing for the car antenna is widespread among American car manufacturers.

See also

• Injection molding
  Injection molding
  Injection molding is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the cavity...
  
  
• Quarter glass
  Quarter glass
  Quarter glass on automobiles and closed carriages may be a side window in the front door or located on each side of the car just forward of the rear window of the vehicle. Only some cars have them. In some cases the fixed quarter glass may set in the corner or "C-pillar" of the vehicle...