Genuine OEM Volkswagen Coolant Pump Seal Ring, part number 03H121119. This O-ring is specifically designed to prevent coolant leaks from the water pump assembly, ensuring a tight and reliable seal within the cooling system. It is a critical component for maintaining proper fluid levels and preventing engine overheating. Weighing just 0.0012 kg and with a diameter of approximately 0.073 meters, this seal ring is manufactured to precise OEM dimensions and material specifications. Using a genuine OEM seal ring guarantees optimal sealing performance and durability, crucial for the long-term health of your engine's cooling system.