This heavy-duty 8 V-belt (part number 3288689) is specifically designed for Cummins 4BT 3.9 and 6BT 5.9 engines, ensuring reliable power transmission and optimal performance. The belt features a robust construction with multiple ribbed channels that provide excellent grip and prevent slippage during operation. Built to withstand the demanding conditions of industrial engines, this mechanical belt delivers consistent power transfer while maintaining proper tension throughout its service life. Its precision engineering ensures smooth operation and helps reduce wear on engine components. The belt's durable composition makes it suitable for both regular maintenance replacements and heavy-duty applications. Perfect for maintaining the efficiency of your Cummins engine, this V-belt provides the dependable performance needed in challenging industrial environments.