When you buy a new car, you usually don't give much thought to car parts. The car comes with a warranty and the dealer takes care of most of the problems. When a car is manufactured it has parts that are manufactured according to certain specifications. The parts that come with the new car are of a higher quality than parts you buy at the auto store. This is why you want to keep the original factory installed parts as long as possible because they will probably never be replaced with anything of the same quality.

The car parts after-market is the market for replacement car parts. Many times you can't find parts while the car is under warranty unless you buy from the dealer. This is because they aren't being made for the after-market yet. Once parts are manufactured for the after-market you have to be very careful what you buy because of all of the ?knock offs?. Usually you are safe buying a part from a well-known manufacturer. They may not be the exact factory specifications as the original parts are, but they are close enough in terms of material that they will function without causing problems in the car's operating systems. Knock-offs, however, are another story. They are many times made of inferior material that may not be compatible with the car's operating systems. This means that the use of knock-offs can damage the car. Saving a few bucks on a part by buying from a manufacturer that you haven't heard from or buying a knock-off may cost hundreds of dollars in the long-run.

Knock-offs do not always advertise that they are knock-offs. Usually, if you buy from a reputable auto supply store, you are safe, but not always. They too can be tricked. Knock-offs may come in packaging identical to that of the name brand manufacturer. If you are buying parts at a flea market and are getting a really good deal, be sure to check the packaging. Check for the quality of the print. Look for smudges or misspelled words. These are usually good indications that the part is a knock-off. Always be suspicious of a really good deal. If it sounds too good to be true, it probably is so this can apply to buying online or from a foreign country. Make sure that you are dealing with a reputable supplier whether you are buying online or at a store.