Sierra's 18-2446 Outboard Fill/Drain Kit is designed to fit Johnson/Evinrude and Mercury gearcases. It features a thread size of 3/8"-16 (9.5mm-16). Each Sierra product meets or exceeds the original equipment part it replaces.
Designed to fit Johnson/Evinrude and Mercury gearcases Thread Size: 3/8"-16 (9.5mm-16) Includes one fill kit per package Each Sierra product meets or exceeds the original equipment part it replaces