This O-Ring is used on some K Models (O-Ring seal for oil Filter) and Some R Models ( Trim and Air Intake System)
K Models O-Ring seal for oil Filter
This is the O-Ring for the oil filter cover. To avoid leaks, it's always a good idea to replace this o-ring whenever changing the oil filter.
Equivalent to BMW Part Number 11 13 1 460 425
Tip: Oil filter OC91D1 (part number 1100053) includes this o-ring plus a drain plug seal.