There is no substitute for Porsche performance and quality, because only the most thoroughly engineered components make up a Porsche vehicle. Porsche's meticulous standards are applied not only during manufacturing of our vehicles, but also to Porsche repair and restoration parts. Intensive tests are conducted at our Engineering Development Center in Weissach, and prototype parts are subjected to demanding driving trials covering usage over ranges of up to 60,000 miles (100,000 kilometers). By contrast, studies have revealed that aftermarket and salvaged parts may compromise safety, performance, long-term value, and appearance, in many ways: Genuine Porsche parts: there quite literally is no substitute. Available from our Parts Department.