Spark Plug Thread Protective Cap
Print Profile(1)
Description
Threaded cap designed to protect the spark plug hole during engine maintenance, transport, or storage.
Useful to:
- prevent dust and debris entry
- protect the thread during repair work
- temporarily seal the cylinder head opening
✅ Simple and durable design
✅ Hand-tight installation
✅ No supports required
Technical details:
- Thread: (e.g. M14x1.25 – check your engine!)
- FDM-friendly tolerances
⚠️ Note:
The most common spark plug thread size is M14x1.25, but M10 and M12 variants also exist depending on the engine. Always verify compatibility.
Included FreeCdd model so it can easily modified
Recommended materials:
- PETG → good balance
- ABS / ASA → heat resistant
- PLA → temporary use only
Assembly:
The model includes a 65mm and a 60mm version. The model has a through hole to optionally add a screw M6x65 (or 60 depending on the model) to increase the strenght of the part in case of hits.
⚠️ Disclaimer Not intended for running engines
Do not use as a permanent mechanical part
Hand-tight only
Not pressure or heat rated
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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