This Kit Include the following filters: P551551 HYDRAULIC FILTER, SPIN-ON Product Attributes Outer Diameter: 3.66 Inches (93 MM) Thread Size: 1-12 UN Length: 5.35 Inches (136 MM) Gasket OD: 2.80 Inches (71 MM) Gasket ID: 2.40 Inches (61 MM) Efficiency Beta 2: 7 Micron Efficiency Beta 1000: 23 Micron Style: Spin-On Series: SP15/25 Media Type: Cellulose P561134 HEAD ASSEMBLY, HYDRAULIC Product Attributes Length: 3.74 Inches (95 MM) Height: 2.40 Inches (61 MM) Inlet Size: 3/4-14 NPT Outlet Size: 3/4-14 NPT Filter-to-Head Thread: 1-12 UN Bypass Valve: Yes Bypass Valve Setting LR: 25 PSI (1.7 Bar) Series: SP15/25