This sleeve is the perfect replacement part for your Dynapac equipment. The part number is 285911 or 4700285911. It is compatible with Dynapac equipment and is brand new. This sleeve is a great addition to your heavy equipment and will help keep it running smoothly. Plus, we offer free shipping so you can have it delivered right to your doorstep. Don't miss out on this opportunity to upgrade your equipment with a new sleeve. B8A2