Oil Filter

The oil filter is a full-flow filtering, cartridge type that utilizes a paper element. It also has a built-in bypass valve. If the filter gets clogged causing the oil pressure to exceed the preset value, the bypass valve opens and detours the engine oil to flow around the filter. The filter element has a special pleat design to increase the effective filtering area.

Fig 1: Identifying Oil Filter Oil Seal, Filter Body, Bypass Valve And Pleated Element

Courtesy of SUBARU OF AMERICA, INC.