You should know that in Pennsylvania and many other states,you do not have to use the repair shop which is recommended by the insurance company, whether it be your own insurance company or the company which insures the person who caused the damage to your vehicle. In Pennsylvania you have the right to have your vehicle restored to the condition it was in prior to the accident which caused the damage. This should include the use of O.E.M. (Original Equipment Manufacturer) parts in some situations. Here is an excerpt from the Pennsylvania Insurance Department website:
Your insurance company is required to pay the amount necessary to return the motor vehicle to its same condition just prior to the damage in question. At your request, you may obtain information from the insurance company regarding repair facilities within a reasonable distance of where the motor vehicle is located and where work will be performed in accordance with the written appraisal. You are not required to use any specific repair shop, but can choose the repair shop you trust.
Excerpted from "Your Guide to Auto Insurance Premiums" - Page 3
If the vehicle you own has been damaged, the decision of where the vehicle is to be repaired is yours. No insurer, adjuster, appraiser or agent shall require that repairs be made at a specific repair facility.
A few more informational web pages are available below: