Remanufactured from Weller, the Eaton RTLO18918B Back Half delivers 18 forward speeds, smooth power transfer, and dependable performance for heavy duty trucking applications. Built to OEM Eaton standards, this replacement back half is engineered for durability and precision fit, restoring the transmission’s functionality and extending its service life. With Weller’s rigorous remanufacturing process, the RTLO18918B Back Half helps fleets minimize downtime, reduce maintenance costs, and maintain reliable operation mile after mile.