Call local junkyards to ask about their policy on selling working car parts. Junkyards typically buy entire cars and leave it up to individuals to remove the parts they need. Some, however, will buy individual parts as long as they are in good working condition.
Sometimes selling a car for parts is more profitable than selling it as a whole. This is obviously true when you want to sell a junked or damaged car that can't be returned to proper running order.
Join the Just Parts website (see Resources below). Just Parts is an online marketplace that matches buyers and sellers of auto parts and even entire junk cars. Being a member of this site can help match you with a buyer anywhere in the country that is looking for the exact car part that you have. Breaking down the geographic barriers gives you access to a new audience of potential buyers and makes it much easier to sell your car parts.
But what if a car can still be repaired? In that case, you have to weigh the cost of a restoration against the likely return on your investment. If you can't recoup your money in a sale, it may be wiser -- and easier -- to sell the car for parts, or "pick and pull."