The Iwis Porsche Engine Timing Chain Kit - 90001173 is a complete set of timing chain components designed specifically for Porsche engines. This kit includes all necessary parts for proper timing chain replacement, including the timing chain, tensioner, guides, and sprockets. It is a high-quality, reliable, and durable kit that ensures proper engine timing and performance. This kit is compatible with various Porsche models and is a direct replacement for the original equipment. It is designed and manufactured by Iwis, a trusted brand in the automotive industry.