Details Product Attributes Outer Diameter: 3.03 Inches (77 MM) Thread Size: 7/8-14 UN Length: 5.83 Inches (148 MM) Gasket OD: 5.04 Inches (128 MM) Gasket ID: 4.72 Inches (120 MM) Efficiency 50%: 5 Micron Efficiency Test Std: SAE J1985 Emulsified H2O Efficiency: 95.00 Percent Type: Water Separator Style: Spin-On Primary Application: NAVISTAR 1820749C1