New exhaust elbow/riser. Direct Mercruiser replacement. Used in 2.5L and 3.0L late model applications from 1982-85 and 1990 and later. - 4" Diameter - Two bolt pattern - Includes mounting hardware, gaskets & exhaust bellow with clamps. Replaces: Mercruiser 12076, 12076A2; Sierra 18-1975-1; Mallory 9-40558; GLM 51120