Sierra 18-0106-9 Exhaust Manifold Gasket (Pkg Of 2)Sierra 18-0106-9 Exhaust Manifold Gasket sold as a package of two. This gasket is for use with Johnson/Evinrude Outboards. All Sierra internal engine parts are manufactured to meet or exceed OEM requirements.Interchangeable with: GLM; 33690; Johnson/Evinrude Outboard; 324323;