Genuine LiftMaster K41-0540-000 complete motor, gear box and encoder assembly for 3 inch extended shaft units for the Maxum industrial DC operators.
Fitment: LiftMaster Maxum JDC7 and JHDC7 operators with the 3 in. extended shaft (E models).
For the 3 in. extended shaft (E) models only. The 2 in. shaft units take K41-0374-000.
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.