A Japanese genuine OEM parts catalog is a reference guide that lists the original equipment manufacturer (OEM) parts specifically designed and made for a particular make and model of Japanese vehicle. It includes detailed information about each part, such as the part number, description, and dimensions, and may include illustrations or diagrams to help identify the correct part. OEM parts catalogs are used by mechanics, auto repair shops, and other automotive professionals to order the correct parts for repair and maintenance work on Japanese vehicles, and can also be helpful for DIY car enthusiasts. It is important to use genuine OEM parts when repairing or maintaining a Japanese vehicle to ensure proper fit and quality.