Sierra 18-5650 Starter Drive AssemblySierra high-quality replacement starter drive assembly for Mercury Marine engines.Interchangeable with: Arco; DV366; Mercury Marine; 57380; Application:Mercury Marine Model: 402, 40; 1980-1983; s/n 5556230 & up; Model: 402, 40; 1980-1983; s/n 7144763 & up; Model: 402, 40; 1980-1983; s/n 8064750 & up; Model: 402, 40; 1980-1983; s/n 9251456 & up;