Shop by Brand Mercury OutboardGasket/Gasket Kit Back Powerhead Gasket Kit 27-815791A00 Viewer:137 OEM No.: 27-815791A00 / 500-230 For Mercury Outboard Engine You May Also Be Interested In Gasket 27-80366314/80366314 Gasket, Powerhead 27-191861/19186 1 Housing, Water Pump 6E0-44311-00-00 Piston Ring 12140-94351-050 0.50