Ultra Violet Light: That portion of the light spectrum which is largely responsible for the degradation of paint.
Umbrella Insurance: Provides high limits of additional liability coverage above the limits of your homeowner's and auto policy. In addition, it provides coverage that may be excluded by other liability policies.
Unibody: A type of vehicle body construction in which the outer skin, roof, and floor are formed and assembled to produce a single unit providing structural strength and rigidity. This concept was introduced in the 1920’s but was not widely used in mass-produced automobiles until the late 1970’s. Prior to this time, vehicle bodies were built and bolted to separate steel chassis. Conventional pick-up trucks are still built in this manner.
Uninsured/Underinsured Motorist Coverage: Pays (up to the coverage limit) for injuries for you and other passengers in your vehicle, and property damage caused by a hit-and-run driver or a motorist without liability insurance. It will also pay when your medical and car repair bills are higher than the other driver´s liability coverage.
Usage: This refers to the primary function or purpose in which you intend to operate your vehicle. For example, if you primarily drive your car to and from work, the usage is considered "commute". If you are self-employed and primarily drive to see customers, the usage is considered "business". If you are retired, your usage is considered "pleasure".
Used Parts: A part taken from another vehicle either exactly like or somewhat like yours. It may be an OE part or imitation part. It is usually inspected visually for damage and installed on a vehicle if it appears to be OK.
For more information on used parts.