Garage Door Opener Limit Switches & Assemblies

Replacement garage door opener limit switches and limit assemblies for LiftMaster and Chamberlain residential and commercial openers, Genie screw drive and Chain Glide openers, and Allstar, Linear, Sommer and Challenger.
Find your opener in the guide below the products.
- LiftMaster K23-10041 Commercial Limit SwitchSKU: K23-10041$13.27 As low as $11.94Genuine LiftMaster K23-10041 Commercial Limit Switch for…
- Allstar 103394 Down Limit AssemblySKU: 103394$24.95 As low as $21.96Genuine OEM Allstar 103394 Down Limit Assembly for…
- Allstar 103393 Up Limit AssemblySKU: 103393$19.95 As low as $17.56OEM replacement: Allstar 103393 Up Limit Assembly for…
- Genie 20113R.S Limit SwitchSKU: 20113R.S$16.10 As low as $14.49Genuine Genie 20113R.S Limit Switch — OEM replacement for…
- LiftMaster 41D3452 Limit Switch Kit for LiftMaster, Chamberlain & Craftsman OpenersSKU: 41D3452$38.21 As low as $34.39The genuine LiftMaster 41D3452 is the one-piece limit…
- Linear HAE00004 Limit AssemblySKU: HAE00004$16.98 As low as $15.28Compatible with Linear garage door opener models: LDO33,…
- LiftMaster K13-10024 Limit Nut, CommercialSKU: K13-10024$10.16 As low as $9.14OEM replacement part: LiftMaster K13-10024 Commercial…
- Genie 33950S.S Down Limit Switch Brown 138"SKU: 33950S.S$19.38 As low as $17.44OEM-equivalent replacement for Genie 33950S.S Down Limit…
- Genie 27094A.S Limit PinionSKU: 27094A.S$1.08 As low as $0.97Genie 27094A.S Limit Pinion — genuine OEM replacement…
- Challenger 160366 Limit Stop, 3 Pack (P-1030)SKU: 160366X3$8.75Replacement limit stops for Challenger garage door openers,…
- Genie 27220A.S Limit SwitchSKU: 27220A.S$7.68 As low as $6.91Genuine Genie 27220A.S Limit Switch — OEM replacement for…
- LiftMaster 41A5640 Limit Switch AssemblySKU: 41A5640$34.25 As low as $30.83Replacement for LiftMaster 41A5640 Limit Switch Assembly;…
- Genie 33950R.S Up Limit Switch Grey 66"SKU: 33950R.S$17.50 As low as $15.75Genuine Genie 33950R.S Up Limit Switch (Gray) OEM…
- Genie 20418R.S Brown Down Limit LeadSKU: 20418R.S$9.53 As low as $8.58Genuine Genie 20418R.S Brown Down Limit Lead — OEM…
- Garage Door Emergency Release from Outside, Keyed, 5 ft CableSKU: D-2-5$9.13 As low as $8.22Keyed emergency disconnect that lets you release your…
- Genie 27093A.S Limit WheelSKU: 27093A.S$5.90 As low as $5.31OEM replacement for Genie 27093A.S Limit Wheel; restores…
- Genie 34538R.S Up Limit Switch (Magnetic) for Chain Glide OpenersSKU: 34538R.S$14.74 As low as $13.27The genuine Genie 34538R.S is the magnetic up limit switch…
- LiftMaster 71-909210MD FIELD MOD, DUAL AUX LIMIT SWITCHSKU: 71-909210MD$62.32 As low as $56.09Special OrderWhat does this mean?LiftMaster part 71-909210MD Field Mod, Dual Aux Limit…
- LiftMaster 041K3796 LIMIT SPROCKET KITSKU: 041K3796$64.43 As low as $57.99Special OrderWhat does this mean?Genuine LiftMaster 041K3796 LIMIT SPROCKET KIT for…
- LiftMaster 81C253 Limit Switch Drive & RetainerSKU: 81C253$18.23 As low as $16.41Special OrderWhat does this mean?LiftMaster 81C253 Limit Switch Drive & Retainer — OEM…
Limit switches by brand
| Brand | Limit parts |
|---|---|
| LiftMaster / Chamberlain | 41D3452 limit switch kit (after 1995), 41D3452-2 (3275, 3575), 41A5640 (3595), 41A2818 limit switch drive and retainer |
| LiftMaster commercial | K72-12493 kit for MT, MJ, MH and HMJ; K23-10041 limit switch; K13-10024 limit nut |
| Genie | Screw drive 33950R.S up (white, 66") and 33950S.S down (brown, 138"); 34538R.S up limit for Chain Glide; 20113R.S and 27220A.S limit switches; 27093A.S limit wheel, 27094A.S pinion |
| Other brands | Allstar 103393 up and 103394 down limit assemblies; Linear HAE00004; Sommer YS10221-00001 limit stop (evo+/pro+); Challenger 160366 limit stops |
After you replace a limit switch, set the travel limits and test the safety reversal: the door must reverse when it touches a 2x4 laid flat on the floor.
Newer opener? See travel modules. Questions? Call 877-379-4947 with your opener model.
Frequently Asked Questions
Which LiftMaster limit switch do I need?
The 41D3452 limit switch kit fits LiftMaster and Chamberlain openers made after 1995, including chain drive 2245, 2265, 2565, 3245 and 3265 and belt drive 3270, 3280 and 3585. The 3275 and 3575 use the 41D3452-2, and the 3595 uses the 41A5640. Commercial MT, MJ, MH and HMJ operators use the K72-12493 kit.
Does my opener have a limit switch or a travel module?
Older LiftMaster and Chamberlain AC openers, such as the 3265 and 3280, use a limit switch kit. Newer DC openers, such as the 8160W, 81602 and 8550W, use a travel module instead. Genie screw drives use magnetic up and down limit switches on the rail.
Which Genie limit switch do I need?
Genie screw drive openers such as the Pro99, CMD9900, H8000, ISD990, ISD1000, 4060L and 4560 use the 33950R.S up limit switch (white wire, at the power head end) and the 33950S.S down limit switch (brown wire). Chain Glide openers use the 34538R.S.

























