The Kenworth 15 Inch Donaldson Preferred Fit is a reliable and practical product designed for rear installation. With 14 two-inch holes, it ensures efficient airflow and optimal performance. This product is perfect for enhancing the functionality of your vehicle without compromising on quality. Its preferred fit design guarantees a seamless installation process, making it a convenient choice for any Kenworth owner. Trust in this product to deliver the benefits of improved airflow and enhanced performance, ensuring a smooth and efficient driving experience.