Should One opt for Second Hand Car Parts?

This is one big question, which needs to be addressed. Can one actually go for used or say second hand parts, for their luxury companion, their car? Most people carry a doubt in their mind regarding the used car parts. People sometimes face dilemma, when their car needs repair or a car part needs to be replaced. It is because, the new car parts are costly, and purchasing them may burn a hole in their pocket.