Sierra 18-2761 MerCruiser 3" Exhaust TubeSierra replacement exhaust tube for use with MerCruiser Stern Drives. Sierra engine parts are manufactured to meet or exceed OEM requirements.Features: Fits: MCM 470/485, 185, 205, 898, 228 & 260; I.D.: 3" or 76.2mm; Interchangeable with: GLM; 89090; Mallory; 9-72809; MerCruiser Stern Drive; 32-90949; 32-90949T;