Audio listings are qualified by position, by amplifier package and by whether the unit is amplified or unamplified — a Bose or Infinity system speaker will not substitute for the base audio speaker in the same door. Cameras and displays are listed by the OEM number on the casing.
If you are upgrading or replacing a head unit, check whether the vehicle uses a separate amplifier before ordering speakers; the impedance difference is the usual reason a replacement set sounds worse than the originals.
