Fuel hoses with quick-release couplings:
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Seal fuel hoses (1) with special tool 13 5 281.
Seal fuel lines (2) with special tool 13 5 282.
Installation:
Check O-ring in fuel hose and sealing surfaces on fuel lines for damage; replace components if necessary.
Coat O-ring for assembly with anti-friction agent.