Sierra International 18-9410-2 SAE 30 Full Synthetic Marine Engine Oil. Recommended for gasoline and diesel inboard and sterndrive engines.. Superior engine protection during startups, operation and storage.. Reduces friction and wear for extended engine life.. Longer lubrication effectiveness than...

The Sierra 18-2381 Upper Drive Unit Cap is interchangeable with the following: GLM 28400, Mallory 9-78121, Mercruiser 94998A2, 9-4998A4, 94998A1, 94998A3. Each Sierra product meets or exceeds the original equipment part it replaces.