This is a blind plug or plug cover for the DIN/ISO 4165 12v plug a.k.a. BMW accessory plug found on motorcycles.
Printed with 30% rectilinear infill and 3 walls in PLA, I suppose something UV-resistant would be a better choice for longevity.
ISO_4165_Plug_Cover.step | 14.1KB | |
ISO_4165_Plug_Cover.stl | 279.6KB |