This UPPER RADIATOR COOLANT HOSE, OEM part number 4D0121101T, is authentic and sourced directly from salvaged Audi vehicles. Designed to facilitate the flow of coolant from the radiator to the engine, this upper hose is integral for maintaining optimal engine temperature and performance. It is compatible with the 2000-2003 Audi A8 Quattro and S8 models, featuring the 4.2L V8 gas engine. A common replacement for worn or damaged hoses, this specific part plays a vital role in preventing engine overheating. Additional compatible part numbers include N90926501, 443121321, and 78121113F. Restore your vehicle’s cooling system with this factory-original component.
