Sierra Marine engine parts are designed to meet or exceed the OEM part they are intended to replace and theyare backed by the SeaStar SolutionsTwo-Year Warranty—one of the best in the business.We offer a variety of Sierra engine parts for most engine applications on the water today—including MerCruiser, OMC, Johnson/Evinrude, Volvo and more.Key Features of Sierra V-BeltsHigh-strength synthetic cords resist shock loadLow-stretch properties assure uniform performance over the life of the beltSpecial rubber compound section assures smooth and even transfer of load forces to the cordsCogs are molded to precise engineering tolerances to improve flexibility and maintain cord supportRubber edges maintain positive, no-slip contact with pulley groovesV-Belt ApplicationsSierra Part #ApplicationReplaces OEM Part #Effective LengthTop WidthModel18-15550Mallory9-5500055" or 139.7cm29/64" or 11.5mm1053360218-15550MerCruiser Stern Drive57-13458, 57-13458T, 57-13458Q55" or 139.7cm29/64" or 11.5mm1053360218-15490Mallory9-5500752 1/2"29/64" or 11.5mm1053356018-15490MerCruiser Stern Drive57-816295T, 57-816295Q52 1/2"29/64" or 11.5mm1053356018-15290MerCruiser Stern Drive57-53215, 57-53215T, 57-13457T, 57-13457, 57-13457Q29" or 73.7cm29/64" or 11.5mm1053343818-15480Mallory9-5500348" or 121.9cm29/64" or 11.5mm437836018-15480MerCruiser Stern Drive57-48122, 57-48122Q48" or 121.9cm29/64" or 11.5mm437836018-15300MerCruiser Stern Drive57-4975630" or 76.2cm29/64" or