Description
Grote 52922 is a 4-inch round red economy stop/turn/tail lamp with a female-pin connector and a single 2057 incandescent bulb. The polycarbonate housing has a hermetic lens-to-housing seal, drops into standard 4 in. round grommets, and replaces the legacy ZBJD52772 / GM52772 family of round red STT lamps in 12V tractor and trailer rear lighting circuits.
Specifications
| Manufacturer | Grote |
|---|---|
| Part Number | 52922 |
| Series | 4 in. Economy STT |
| Function | Stop / Turn / Tail (I, P2, S, T) |
| Lens | Red polycarbonate, 4 in. round |
| Lighting | Incandescent, bulb 2057 (32/2 CP) |
| Voltage | 12V |
| Current Draw | 2.1 A (stop) / 0.48 A (tail) |
| Connector | Female pin |
| Overall Diameter | 4.31 in. |
| Compliance | FMVSS 108 |
Cross References
This part replaces or is equivalent to the following part numbers:
- Grote: 52922, 529223, 529523, 52772, 527723, 53102, 532523
- Truck-Lite: 40202R, 40202R3, 40202RP, 40242R, 40282R, 40282R3, 40282RP
- Also known as: ZBJD52772, PT4000R, M426R, ST45RB, 80990, 8413-40282R
Applications
This 4 in. round red STT lamp fits grommet-mount rear lighting locations on:
- Class 6-8 highway tractors and straight trucks (12V)
- Heavy-duty trailers, dump bodies, and vocational chassis with 4 in. round female-pin STT cutouts
Confirm lamp shape, function, and connector style before ordering.









