Original quality water tank hose with OE number 17127568246, designed for multiple BMW models. Constructed with original grade multi-layer reinforced EPDM rubber, this cooling hose provides excellent high temperature resistance, high pressure tolerance, coolant corrosion resistance and long-term anti-aging properties. It can effectively resist harsh under-hood heat, frequent cold and hot cycles and engine vibration, preventing hardening, cracking, swelling and coolant leakage during long service periods.Produced in full compliance with OEM standards and original vehicle design data, it features accurate overall dimensions, perfect bending radian and integrated leak-proof connectors. The smooth inner wall ensures unobstructed coolant circulation and efficient heat exchange, stably maintaining optimal engine operating temperature and avoiding overheating and cooling system malfunctions.Direct OE plug-and-play installation without modification, ideal for replacing aging, damaged or leaking original hoses. With original-level quality, excellent sealing performance and durable service life, it is a trustworthy aftermarket part for BMW daily maintenance, repair and bulk wholesale.