Sierra International 18-1937 Elbow Boat Engine Parts For: mercuries 4 cyl. 224 cu. In. 3.7L (models: 165 170 180 190) Mercurieser Stern Drive 98562A6, GLM 51180, Mallory 9-40551, Osco 8561, HE 8561 Backed by sierra's industry leading Warranty