Genuine OEM Volkswagen stud, part number N91082401. This threaded fastener is designed to secure various components within the engine cooling assembly, providing a stable mounting point where a bolt head would be inaccessible or impractical. It features precise thread pitch and length specifications to ensure secure retention under thermal cycling. Genuine OEM studs are manufactured to exact material hardness standards to prevent shearing or thread stripping, which is critical for maintaining the integrity of cooling system connections.