Ariz. Rev. Stat. § 28-2095
I. For the purposes of this section:
1. For passenger vehicles, "component parts" includes the cowl or firewall, front end assembly, rear clip, including the roof panel, the roof panel if installed separately and the frame or any portion of the frame, or in the case of a unitized body, the supporting structure that serves as the frame, each door, the hood, each fender or quarter panel, the deck lid or hatchback, each bumper, transmissions or transaxles and an engine or motor. For the purposes of this paragraph: