The product is a used running left side cylinder head for Subaru vehicles such as the Impreza, Forester, Legacy, and Outback with a 2.5 SOHC engine. Made of aluminum and originating from Japan, this high-quality cylinder head is a crucial component for maintaining the engine's performance and efficiency. It provides a durable and reliable option for car owners looking to replace or upgrade their cylinder head on their Subaru vehicle.