The oil filter housing is pretty self explanitory; It holds the oil filter assembly. Not only does this provide a small amount of cooling but it makes the filter much easier to service.
The factory oil filter housing has proven to be defective, often cracking internally, which leads to a mixture of oil and coolant and plastic contaminants being forced into the coolant and oil passages. This could lead to complete engine failure if not properly addressed in time. This replacement oil filter housing and cooler is a great replacement option to restore your BMW's oil filtration system without having to pay Genuine BMW retail prices of $650 or more for the same components.
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