Note: A minor difference in product design may result in a different model. Please carefully check if the pictures match with your product. And feel free to contact us if you are not sure if this is the right model for you. Fit For: Part Number: 4891116 4898548 504065874 Compatible for Caterpillar CAT Excavator E110B E120B E240B E300 Features: This product comes with best after-sales service. We are committed to delivering durable high-quality product for you. Thank you for choosing our product! Includes: 1pc Belt Tensioner 4891116 4898548 504065874 .