LiftMaster 1345, 1346, 1355, 1356 Chain Parts

LiftMaster 1345, 1346, 1355 and 1356 Replacement Parts

This page covers the 1345, 1346, 1355 and 1356 chain drive openers. Everything for them is here: the motor unit, the gear and sprocket, the rail and chain, the safety sensors, the door hardware, the wall control and the remote. Each section has its own diagram, and the reference numbers are specific to the diagram directly above them.

1. Motor Unit

First part of number below corresponds to diagram number above:

Two motor options. Ref 12 is the 1/2 HP motor and bracket; the 041D5563 is the 3/4 HP. Check the horsepower on your motor unit label and order to match. 041A2817 is called out twice, at 03 and 18 — the same gear kit either way. The capacitor is the K030B0532-1; the older 30B366 is discontinued and this replaces it.

2. Gear and Sprocket — Factory or Aftermarket

The nylon gear on the 041C4220A is the most common failure on these openers, and the part fits most LiftMaster chain drives. If the motor runs and the door does not move, this is what to order. We stock both the genuine LiftMaster assembly and a lower cost aftermarket version built to the same dimensions.

Fit the new gear with the opener disconnected from the door, and grease the worm before reassembly — running it dry is what strips the next one. The 041A2817 gear kit is the alternative if only the gear itself has failed.

3. Rail, Chain and Trolley

First part of number below corresponds to diagram number above:

The chain assembly is sized to your door height. Measure the door opening, not the rail. A slack chain can usually be re-tensioned rather than replaced — replace it if links are stiff, the cable is frayed, or the chain has jumped the sprocket. Browse all chain and master links.

Complete rail assemblies

4. Safety Sensors and Brackets

First part of number below corresponds to diagram number above:

Current parts — order these

Superseded part numbers

The current eyes and brackets replace every earlier version, so there is no need to match your old part number — order the current part.

5. Remotes, Wall Controls and Door Hardware

First part of number below corresponds to diagram number above:

Remote controls

The original remotes for these openers are discontinued. The 893MAX is the universal replacement and works with all the older LiftMaster, Chamberlain and Craftsman openers. It covers 371LM, 971LM, 973LM and 893LM, and is the listed substitute for 81LM, 83LM, 63LM, 753CB, 850CB, 853CB, 953CB, 953EV and Craftsman 53680, 53859 and 53879. Browse all LiftMaster remote controls.

Wall controls — superseded part numbers

More LiftMaster Parts

All chain drive rail parts  ·  Chain and master links  ·  All LiftMaster opener parts  ·  LiftMaster remote controls