LiftMaster 041A3475-17 Chain Drive Installation Hardware Kit

LiftMaster 041A3475-17 Chain Drive Installation Hardware Kit

The 041A3475-17 is the small but important hardware kit used around select LiftMaster and Chamberlain chain drive garage door opener installations. Hardware like clevis pins, fasteners, rail hardware, and mounting pieces often gets lost during service or becomes worn after years of vibration and door movement. Using mismatched hardware from a hardware store can create alignment problems, loose door arm connections, or poor rail support, especially on chain drive openers where vibration is normal. This kit is intended to restore the proper installation hardware set for supported chain drive opener models. It does not replace major rail sections, motor heads, chain assemblies, or trolley parts. Customers should compare the existing opener model and rail layout against the installation manual before ordering, especially if the opener has been modified or if parts have already been changed by another installer.

Compatible With

• Various LiftMaster chain drive garage door openers where the manual lists 041A3475-17
• Various Chamberlain chain drive garage door openers using the same installation hardware kit
• Residential Access Solutions chain drive opener applications that call for this hardware kit
• Not intended for belt drive, screw drive, jackshaft, or commercial operators unless shown in the parts diagram

Features & Specifications

Also Known As / Related Part Numbers

• 041A3475-17
• 41A3475-17
• LM-041A3475-17
• Installation hardware kit
• Chain drive hardware kit

Technician Note

Correct fitment depends on the original part number, opener generation, and the exact hardware or electrical layout. If a similar part looks close but uses a different voltage, rail length, learn button generation, bracket shape, or connector style, it should be treated as a different part until the parts diagram confirms otherwise.

Before Ordering

• Match the manufacturer part number and any also-known-as number on the original part or parts diagram.
• Verify opener model, drive type, rail length, voltage, learn button color, or door height when those details apply.
• Inspect nearby wear items so the replacement part is not damaged by a separate mechanical or electrical problem.
• Do not substitute similar-looking LiftMaster parts unless the manual confirms interchangeability.

Professional Advisory

For electrical diagnosis, line-voltage repairs, motor replacement, or unsafe door movement, have the system inspected by a qualified garage door technician. Do not bypass safety devices or modify control wiring to make an incompatible part work.

Product Q&A

What is included in the 041A3475-17 kit?

It is an installation hardware replacement kit supplied for supported chain drive opener installations. Exact included pieces should be compared to the parts diagram.

Is this kit for belt drive openers?

No. The strongest manufacturer references identify it for various LiftMaster and Chamberlain chain drive garage door openers.

Can I use generic bolts instead of this hardware kit?

Generic hardware may not match the original size, pin style, or load requirements. Using the correct kit helps keep the rail and door arm connections secure.

Does this kit include the chain or trolley?

No. It is a hardware kit only and should not be confused with chain, rail, or trolley replacement kits.

How should I confirm compatibility?

Check the opener model manual or replacement parts diagram for 041A3475-17 or 41A3475-17 before ordering.