Heater Core Hose, Left, Rein - E53 X5 3.0/4.4/4.6is/4.8is

This part is listed by BMW as BMW part number 64218409063 and is described as the coolant hose from the water valve to the driver's side heater core on 1999-2006 E53 X5 models.

Rubber hoses are ideal when new, as they allow some movement and flexibility during driving. The only problem is that they begin to degrade as they age and can eventually fail. The plastic clips and metal retaining clamps on hoses are stronger than before but they are only really good for one-time use. Once removed they never seem to seal as well, leading to a leak soon after. A new hose is recommended any time the old one is disconnected (unless it's only a couple of years old). We highly recommend that you replace your radiator hoses as a preventative measure before they fail in order to save you from further headaches and expenses.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.