Genuine LiftMaster K41-0375-000 complete motor, gear box and encoder assembly for the Maxum industrial DC operators.
Fitment: LiftMaster Maxum JHDC12S.
For the standard 2 in. shaft. The 3 in. extended shaft (E) models take K41-0595-000.
Ordering the right part depends on the full model number, which is printed on the operator label. Call GateHouse Supplies if you are not sure — we service these units every day.