For Detroit Diesel Belt Serpentine Tensioner For Series 50 60 OE# 23533015 NEW. Serpentine Belt Tensioner 23533015 for Detroit Diesel Series 50 60 S50 S60 8.5L 11.1L 12.7L 14.0L. Premium Quality Construction: Manufactured with high-quality materials for reliable durability and long service life. Reliable Belt Performance: Helps maintain proper serpentine belt tension, reducing belt wear and improving engine accessory operation. Direct Replacement: Designed to replace the original worn or damaged belt tensioner for easy installation. Factory Tested: Each unit is inspected to ensure dependable performance and consistent quality. Product Type: Serpentine Belt Tensioner. Fitment Type: Direct Replacement. For Detroit Diesel Engines. Series 50 60 S50 S60 8.5L 11.1L 12.7L 14.0L. 1 × Serpentine Belt Tensioner. Engine applications may vary depending on model year and configuration. If you are not sure whether this part fits your vehicle or equipment, please send us your OE number or engine information, and we will help confirm compatibility. We are committed to providing each customer with the outstanding customer service, the highest quality products and a comfortable, secure shopping. Professional installation is highly recommended for our products. We do not provide installation instructions online. We apologize for the late reply during the weekends or holidays. Welcome to my stores! The Smart of your choice and satisfaction guarantee.