High quality heater hose with OE number 64219308346, specially designed for BMW B48 and B58 engines. Made of premium multi-layer reinforced EPDM rubber, this heater hose features excellent high temperature resistance, pressure resistance, coolant corrosion resistance and long-term anti-aging performance. It can steadily withstand extreme engine compartment temperatures, frequent cold and hot cycles and continuous driving vibration, effectively preventing hardening, cracking, swelling and liquid leakage.Manufactured in full compliance with OEM specifications, with precise dimensions, optimized bending radian and high-density sealed connectors. The smooth inner wall ensures smooth circulating of heating coolant, guarantees stable heating system operation and maintains comfortable in-car temperature.Direct OE fit for quick installation without modification. It is a perfect replacement for aging, brittle and leaking original heater hose. With reliable quality, fine workmanship and durable service life, it is a cost-effective spare part for daily repair, maintenance and bulk wholesale of BMW B48/B58 models.