Parts for car engines can be bought in specific shops, both in the physical market, as well as the online market. These parts serve to meet needs without requiring the full engine exchange. The pieces have different values according to the one that the customer will need.
To buy parts you have to do research on the market to find the store that will offer the best value. And, most stores work with great stocks and there are cases that will require you to make the application wait arrive. The most exclusive parts are those that most have stock shortage.
The values of respect, you have to define the part you want to see then can its value. Some parts have higher values and why it is important you research well before buying. Search well on the internet or in physical stores to get an average value for the product that you are in need.