Remanufactured from Weller, the Allison 4500RDS transmission delivers reliable power transfer, smooth shifting, and long-lasting durability for medium- and heavy-duty trucks as well as vocational applications. Built to OEM Allison standards, this model offers advanced electronic controls, multiple forward speeds, and a robust design to handle demanding conditions with ease. With Weller’s precision remanufacturing process, the 4500RDS helps fleets reduce downtime, extend service life, and maintain consistent productivity mile after mile.