BMW Crankcase Vent Hose X5 E53 3.0i M54 11157532628
Vent drain hose.
These leak oil and air mostly because the PCV valve fails or the hose has cracked due to being brittle. If you require this hose you may also require the other hoses connected to the valve and the oil separator. Please check all hoses and the PCV operation to ensure it is repaired correctly.
Sometimes these can be difficult to fit due to the new o-rings, so be patient and push on firm using a smear of oil around the o-rings to aid the fitment.
Position: PCV valve to dipstick guide tube.