Genuine OEM Nissan Gearbox Oil Pan Gasket, part number 313971XJ0A. This gasket is designed to create a seal between the gearbox oil pan and the gearbox casing. Its primary function is to prevent the leakage of transmission fluid and to keep contaminants out of the gearbox. Manufactured from durable, oil-resistant material, it ensures a reliable and long-lasting seal under operating conditions. The image shows a rectangular gasket with multiple bolt holes, consistent with an oil pan gasket. Genuine OEM parts are crucial for ensuring a leak-free seal and protecting the transmission's internal components.