The Gates Belt 4PK X 621 - K040233SF is a high-quality automotive belt designed for use in various vehicles. It is made from durable materials and features a 4 rib design for optimal performance. This belt is 621mm in length and has a width of 4PK, making it suitable for a wide range of applications. It is specifically designed for use in the automotive industry and is compatible with various makes and models of cars. The K040233SF model number indicates that this belt is part of the Gates Micro-V series and has been designed for superior performance and reliability. Overall, the Gates Belt 4PK X 621 - K040233SF is a reliable and efficient choice for any automotive belt needs.