Genuine OEM Volvo Engine Oil Cooler Hose, part number 30757649. This hose transfers oil to and from the oil cooler, playing a critical role in maintaining proper engine lubrication and cooling. It is designed for precise fitment within the engine's oil cooling system. Genuine OEM hoses are constructed with specific materials and tolerances to withstand engine oil temperatures and pressures, ensuring a long service life and preventing leaks.