To use a parts number finder, go to one of the websites that has a number finder, enter the number of the part you are looking for in the search field, and press the search button. Some websites that have parts number finders include Auto Parts, ACDelco and Gates. Most websites also offer users an opportunity to search parts by application, type of repair, manufacturer part number, keyword and category.
Part numbers can sometimes be challenging to find on the parts themselves, so it is important to know where to look for the number and how it should look. For example, the part number of the engine is usually presented as 17 digits if the car was manufactured after 1981 or 11 to 17 digits if it was manufactured before that year. The most common place where the engine part number may be located is the dashboard right under the windshield on the driver's side of the vehicle. If the engine number is not there, it may be imprinted on the inside of the driver's door.
If the engine number isn't in those two locations, drivers can look under the hood of the car when the vehicle is not running. The number of the engine should be engraved in it. However, users need to be careful not to touch anything under the hood if the car was working recently.