| Gauge Size | Mount Hole Diameter |
| 2-1/16" | 2.062” (52mm) |
| 2-5/8" | 2.625” or 2.062” (66mm or 52mm) |
| 3-3/8" | 3.375” (86mm) |
| 4" | 3.875” (98mm) |
| 4.5" | 4.250“ (108mm) |
All of the gauge dimensions including the gauge bezel diameters can be found on the Gauge Dimensions Document.
Feb 16, 2022