Description
Genuine Truck-Lite 21001R3 red rectangular marker/clearance lamp from the Super 21 Series — a 1-bulb, 12V incandescent rectangular lamp with a 2-screw mount and the Super 21 plug pigtail with stripped end. PC-rated, FMVSS 108 / SAE compliant. The R3 suffix denotes the bulk packaging variant.
Specifications
| Manufacturer | Truck-Lite |
|---|---|
| Part Number | 21001R3 |
| Series | Super 21, Incandescent |
| Function | Marker / Clearance Light |
| Lens Color | Red |
| Lens Shape | Rectangular |
| Bulbs | 1, 12V |
| Mounting | 2-screw |
| Connection | Super 21 plug, 16 GPT, 12″ stripped-end pigtail |
| Standards | FMVSS 108, CMVSS 108, DOT, SAE PC |
Cross References
This lamp is also referenced by the following part numbers:
- Truck-Lite: 21001R, 21002RP
- Also known as: 45462, 46302, 46872, 84132-1001R, C21001R, GR45462, GR46302, GR46872, L21001R, L21002R
Applications
Side-marker and clearance lighting on heavy-duty truck cabs, trailer panels, and box bodies using the Super 21 footprint. Kits with extension brackets are a direct replacement for Utility Trailer 03-5100-0-097/8 marker positions.
Standard or reflectorized lens versions and ABS-required versions are available — confirm the lens and connector spec on your existing lamp before ordering. Optional sealing gaskets are sold separately.









