The Genuine GM ACDelco OEM 98094201 Silverado Sierra Duramax Diesel Belt Tensioner is a high-quality car part designed specifically for GM vehicles. Manufactured by ACDelco, a trusted brand known for producing original equipment parts, this belt tensioner is a reliable component that ensures proper tension and performance for your vehicle's engine. Made to the OE specifications, this product guarantees a perfect fit and long-lasting durability for your diesel engine.