Mich. Comp. Laws § 257.27a

Sec. 27a. "Major component part" means 1 of the following parts of a vehicle: (a) The engine. (b) The transmission. (c) The right or left front fender. (d) The hood. (e) A door allowing entrance to or egress from the vehicle's passenger compartment of the vehicle. (f) The front or rear bumper. (g) The right or left rear quarter panel. (h) The deck lid, tailgate, or hatchback. (i) The trunk floor pan. (j) The cargo box of a pickup. (k) The frame, or if the vehicle has a unitized body, the supporting structure or structures that serve as the frame. (l) The cab of a truck. (m) The body of a passenger vehicle.