Garage Door Openers · parts
Genie 1128 and 2128 cover parts: exact B-suffix lookup
Quick answer: the grouped Genie diagram assigns 40964R.S as the powerhead cover and 38126A.S as the light-lens cover for labels 1128, 1128B, 2128, and 2128B. The diagram shows four different circuit boards and a battery-backup cover, but those rows are not cover-fit evidence and are not covered here.
Safety boundary
- Read the complete opener model label, including every letter suffix, and identify whether the damaged item is the powerhead cover or the separate light lens before checking a row.
- This is an identification lookup, not a cover-removal guide. If an owner's manual permits work on that cover, disconnect electrical power as that exact manual directs; keep the Safe-T-Beam system installed and active.
- Do not open or repair internal opener components, bypass safety sensors, or work on springs, cables, door balance, tracks, or other high-force door hardware. Use a trained garage-door technician for those conditions.
Compatibility requires a direct model listing, explicit supersession, or equivalent manufacturer evidence.
Models explicitly covered
These model identities have the source evidence listed below. Read the part decision and suffix limits before ordering.
Required identifiers
- Complete opener label exactly 1128, 1128B, 2128, or 2128B
- Identify whether the needed item is the outside powerhead cover or the light lens
Compatibility rules
- Genie's official 1128/2128 diagram explicitly groups 1128, 1128B, 2128, and 2128B and lists powerhead cover 40964R.S plus light-lens cover 38126A.S.
- The same diagram assigns different circuit-board identifiers to 1128, 1128B, 2128, and 2128B. Board or backup-battery claims are outside this cover lookup.
- The battery-backup cover 41115R.S is shown on the diagram, but its exact compatible labels are not stated on a direct product listing in this review; no fit claim is made for it.
Never assume
- A cover diagram proves the same board or battery configuration across base and B-suffix models.
- The visible 41115R.S battery-backup cover fits every one of the four models.
- A shared Connected Pro name establishes cover fit for an unlisted model.
Quick answer: the two listed cover parts
- Powerhead cover: 40964R.S for 1128, 1128B, 2128, and 2128B as grouped in Genie's diagram.
- Light-lens cover: 38126A.S in the same diagram.
What this page does not verify
Genie's diagram lists distinct boards for the four labels and also shows battery-related parts. Those entries do not change this cover-only lookup. The battery-backup cover has no exact-label direct product confirmation in this review, so it is omitted.
Match the full label and the item type. If the required component is a circuit board, battery, or internal assembly, use Genie's current exact-model lookup or qualified service instead of carrying over a cover row.
Safety boundary
- Read the complete opener model label, including every letter suffix, and identify whether the damaged item is the powerhead cover or the separate light lens before checking a row.
- This is an identification lookup, not a cover-removal guide. If an owner's manual permits work on that cover, disconnect electrical power as that exact manual directs; keep the Safe-T-Beam system installed and active.
- Do not open or repair internal opener components, bypass safety sensors, or work on springs, cables, door balance, tracks, or other high-force door hardware. Use a trained garage-door technician for those conditions.