Oil filter P550020 [Donaldson]

Manufacturer: DONALDSON

Purpose of the oil filter:
The oil filter is designed to remove harmful particles from engine oil resulting from wear of friction surfaces, as well as due to the ingestion of solid fuel combustion products in the oil in an internal combustion engine (ICE).
 
Oil filter structure:
The oil filter consists of a metal housing, a filter element and two valves: a bypass valve (sometimes called a safety or bypass valve) and a check valve (anti-drainage).