Napa Air Filter 500146Part No. 500146 Type AIR FILTER Brand NAPGLD Unit of Measure EACH Description Napa Air Filter Warranty Service Interval Type Round Note Radial Seal Height 415mm Inner Diameter Bottom 150mm Outer Diameter Bottom 231mm Outer Diameter Top 231mm Features A Nationwide NAPA Warranty backs this Air Filter Prevents microscopic dust particles from damaging Cylinder walls, Pistons and Piston Rings, which could damage an Engine's performance. NAPA Air Filters