LiftMaster Screw Drive Rail Parts
Rail parts shared across LiftMaster screw drive garage door openers — the 1000SD, 2000SD, 2110, 2220, 3110, 3220, 3130, 3240 and 3840. If you know your opener model, the model page will show the exact parts for it; this page covers the rail assembly itself.
Screw drive, not chain or belt. A screw drive has a threaded steel rod running the length of the rail, with a plastic drive nut riding on it. There is no chain, no belt and no master link. If your rail has a chain or a belt, you are on the wrong page.
Rail Assembly Parts
| Ref |
Part Number |
Description |
| 1 |
041A4795 |
Hardware bag — includes sprocket coupling and fasteners |
| 2 |
K081C0168 |
Rack, angled foot |
| 3 |
K081C0275 |
Rack, flat foot |
| 4 |
041A6263 |
Rail kit, 3 piece SSR — no longer available |
| 5 |
041C4677 |
Complete trolley assembly — no longer available. The 041A6262 is the current screw drive trolley |
| 6 |
041A4836 |
Drive sprocket kit — the threaded rail and drive sprocket |
| 7 |
K025C0020 |
Coupler — joins the motor shaft to the screw rail |
| — |
041A4837-1 |
Worm gear and retainer kit (not shown) |
| — |
83A11-2 |
Rail grease (not shown). Screw drive rails need grease on the threaded rod — a dry rail is the most common cause of grinding and slow travel |
Door Arms & Hardware
| Part Number |
Description |
| 178B35 |
Curved door arm section |
| 178B34 |
Straight door arm section |
| 041A8094 |
Door arm kit — curved and straight sections together |
| 41A2770-6 |
Installation hardware kit |
| L6950 |
Multi-purpose spray lube, green |
| L6960 |
Multi-purpose spray lube, blue |
While You're In There
| Part Number |
Description |
| 041B0873 |
Sensor sunblocker bracket — for sensors in direct sunlight |
| 041A3504 |
Antenna extender kit |
| 041A3504-1 |
Antenna extender kit with adapter |
| 041-0136 |
Safety sensor kit, sending and receiving eyes. Replaces the older 41A5034 |
