The Genuine Porsche Engine Timing Chain Guide, part number 96410502900, is a component used in the engine of a Porsche vehicle to guide the timing chain. This guide is made by Porsche and is designed specifically for use in their 964 model. It is a crucial part of the engine's timing system, ensuring that the chain is properly aligned and functioning correctly. This guide is a genuine Porsche product, made with high-quality materials to ensure durability and reliability. It is an essential component for maintaining the proper functioning of the engine and should be used as a replacement for any damaged or worn timing chain guides in a Porsche 964 vehicle.