A boat engine V-belt transmits power from the engine to auxiliary equipment such as generators, and pumps (seawater or freshwater pumps). Buy the right V-belt for your on-board use. Replacement V-belts for Volvo Penta, Yanmar & Vetus inboards. Smooth or serrated. Multi V belt (flat belts). V-belts made of high quality, low maintenance and long lasting material. Buy a V-belt and start your next voyage!