Donaldson Fuel Filter P550391 for Isuzu 4BD1T 6RB1T 6WG1 6BG1 6HK1 6HK1X 4BG1T 6BG1T 4JG1 4BG1 6SD1 6SD1T Part Number: P550391 Attributes: Outer Diameter: 3.70 inch (94 mm) Thread Size: M24 x 1.5 Length: 6.77 inch (172 mm) Gasket OD: 3.54 inch (90 mm) Gasket ID: 2.68 inch (68 mm) Efficiency 99%: 30 micron Efficiency Test Std: SAE J1985 Emulsified H2O Efficiency: 95.00 Percent Type: Water Separator Style: Spin-On Application: Isuzu Engines:4BD1T, 6RB1T, 6WG1, 6BG1, 6HK1, 6HK1X, 4BG1T, 6BG1T, 4JG1, 4BG1, 6SD1, 6SD1T






