Best Auto Parts LLC has been family owned and operated since 1984. We carry both foreign and domestic cars, trucks, and SUVs. If you need a part, chances are we'll have it here in stock. In the event that we don't, we'll try our hardest to find it for you. Best Auto Parts LLC is located on 4 acres in downtown Frederick, Maryland. We have over 35,000 sq/ft of warehouse space and four dismantling bays. Our warehouse is full of used auto parts off and ready to go. We'll also buy any car for a great price. It doesn't matter if the car has been wrecked, high mileage, bad engine, bad transmission etc. Give us a call for a quote and we'll come get it at no cost to you. Best Auto Parts also does installations so if you buy an engine or transmission from us we can put it in for you as well, just give us a call for a labor quote. Most parts come with a standard 120 day warranty*. *For full warranty details please go to Our Warranty page.