Sierra 18-1937 MerCruiser 3.7L Exhaust Manifold Elbow Replaces 98562A6This Sierra exhaust manifold elbow is for use with MerCruiser 3.7L engines.Application Info:MerCruiser 4 Cyl 224 cu. in. 3.7L engine models 165, 170, 180, & 190Use With: 18-0881-1: Exhaust Elbow Gasket; 18-8530: Exhaust Elbow Mounting Kit; Interchange: GLM; 51180; Mallory; 9-40551; Mercruiser Stern Drive; 98562A6; Osco; 8561;