High quality heater hose with OE number 17123448462, applicable for multiple BMW models. Adopted with premium multilayer reinforced EPDM rubber material, this heater hose delivers outstanding high temperature resistance, pressure resistance, coolant corrosion resistance and long-term anti-aging property. It can adapt to severe under-hood high temperature, frequent cold and hot switching and long-term engine vibration, effectively avoiding hardening, cracking, deformation and fluid leakage in daily use.Manufactured in strict accordance with OEM specifications, it features accurate overall dimension, original bending radian and high-density sealed connectors. Smooth inner wall ensures stable coolant circulation, guarantees normal operation of the heating and cooling system, and maintains proper engine temperature.Direct OE mounting with no cutting or modification needed. Perfect replacement for aged, cracked and leaking original hoses. With fine workmanship, stable performance and cost advantage, it is a reliable spare part for repair, maintenance and bulk wholesale of BMW series vehicles.