The Reinz Porsche Engine Crankcase Breather Gasket - 702171720 is a high-quality gasket designed specifically for Porsche engines. It is used to seal the crankcase breather, which is an important component in the engine's ventilation system. This gasket helps to prevent leaks and ensures that the engine is properly ventilated, which is essential for optimal performance and longevity. It is made from durable materials and is designed to fit perfectly in Porsche engines, providing a reliable and long-lasting seal. This gasket is an essential part of maintaining the health and performance of a Porsche engine.