Sierra 18-15440 Marine V-Belt for MerCruiser and OMC Engines

The Sierra 18-15440 is a premium marine V-belt engineered for reliable performance in demanding marine environments. This radius tooth cogged V-belt features a 44-inch effective length and 29/64-inch (11.5mm) top width, designed specifically for MerCruiser stern drives and OMC inboard and stern drive applications.

Advanced Construction Features:

• High-strength synthetic cord construction resists shock load failure and provides minimal stretch for consistent power transfer throughout the belt's service life
• Special rubber compound in the compression section ensures smooth and even load force distribution to the cords
• Precision-molded cogs improve belt flexibility while maintaining proper cord support
• Enhanced cog geometry creates increased air circulation to keep the belt cool and prevent heat buildup that causes premature wear
• Engineered rubber edges maintain positive, no-slip contact with pulley grooves for reliable energy transfer

OEM Cross-References: Replaces Mercury Marine 57-45856, 57-49213A1, 57-93658; OMC 311046; and other OEM part numbers. This belt meets or exceeds original equipment specifications for optimal performance and durability in your marine engine.