The product is a good used (it was working when came off engine block) left cylinder head casting for a 1999-2005 Subaru 2.5L SOHC EJ251 engine. It is an OEM part made of aluminum, manufactured in Japan. This direct replacement cylinder head is designed to fit seamlessly into the specified engine model, ensuring quality and compatibility. Made by the original manufacturer, this part is a reliable choice for those in need of a replacement cylinder head for their Subaru vehicle.