This product is a genuine Porsche engine timing chain with the part number 958109465C. It is designed specifically for Porsche vehicles and is used to control the timing of the engine's valves. The timing chain is a crucial component in the engine's operation, as it ensures that the valves open and close at the correct times to allow for proper combustion and performance. This product is made from high-quality materials and is manufactured to strict standards to ensure reliability and durability. It is an essential part for maintaining the proper functioning of a Porsche engine.