Genuine OEM Volvo Cooling Electric Powertrain Hose O-Ring, part number 30713577. This O-ring is designed to create a tight seal for the cooling electric powertrain hose, preventing any leakage of coolant. It is a crucial component for the integrity of the electric powertrain cooling system. Made from durable rubber material. Genuine OEM O-rings are manufactured to exact specifications for reliable sealing.