motor vehicle equipment
(8) “motor vehicle equipment” means— (A) any system, part, or component of a motor vehicle as originally manufactured; (B) any similar part or component manufactured or sold for replacement or improvement of a system, part, or component, or as an accessory or addition to a motor vehicle; or (C) any device or an article or apparel, including a motorcycle helmet and excluding medicine or eyeglasses prescribed by a licensed practitioner, that— (i) is not a system, part, or component of a motor vehicle; and (ii) is manufactured, sold, delivered, or offered to be sold for use on public streets, roads, and highways with the apparent purpose of safeguarding users of motor vehicles against risk of accident, injury, or death.
49 USC § 30102(a)(8)
None identified. Default scope is assumed to be the entire title.