W. Va. Code § 46A-6B-3: Genuine and aftermarket crash parts.

For all motor vehicles requiring repair by motor vehicle body shops in the year of their manufacture or in the two succeeding years thereafter, motor vehicle body shops must use genuine crash parts sufficient to maintain the manufacturer's warranty for fit, finish, structural integrity, corrosion resistance, dent resistance and crash performance unless the motor vehicle owner consents in writing at the time of the repair to the use of aftermarket crash parts. No insurance company may require the use of aftermarket crash parts when negotiating repairs of the motor vehicle with any repairer for a period of three years, the year the motor vehicle was manufactured and the two succeeding years thereafter, unless the motor vehicle owner consents in writing at the time of the repair to the use of aftermarket crash parts.