There seems to be an abundance of Chinese clone parts out there that are really affecting the quality of auto repair service. We are fighting a battle with customers to purchase quality when some only see low price when they are making a buying decision. The customer is them super disappointed and angry at us when the low buck part fails. It has gotten so bad in the market place that the low quality parts are even making their way into what we once considered quality auto parts stores so they can have a “competitive” line. The bottom line is the parts just fail before they should and should not be used. When you consider the labor required to install parts, it doesn’t make any sense to use any low dollar item as you will have to redo the work. this is why auto repair shops like mine only install quality parts, We have to stand behind them for up to 3 years! Bosch parts are the highest quality.