Spark Plug Box

thingiverse

This compact box fits perfectly around single spare sparkplugs with a 14mm thread and 21mm hex drive, matching old-style designs exactly. I needed one of these for each of my old mopeds and cars; having at least one spare plug in the vehicle's toolkit is always a good idea. To protect the porcelain insulator and electrode, this sparkplug should be stored in a shockproof box. The longer part has a hex shape inside and a knurling surface on the outside, allowing it to be used to insert the sparkplug into the cylinder thread and hand-tighten it. The exterior features lettering that reads "Spark Plug" and "Zündkerze," which is German. I'd appreciate any modifications made to accommodate different-sized sparkplugs. Seeing some variations would be great! Edit: On March 28, 2018, a smaller version was added, designed for small M10/16mm Hex drive spark plugs found in tiny 4-stroke engines (such as the Honda Monkey or Dax). This file is called "small_Zuendkerzenbox.stl".