GM Spark plug holder

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Description

Spark plug holder I made for a GM V8, using GM's standard cylinder numbering. Feel free to download, and modify as you'd like! Changed heights, centered all items, added a centering point for the electrode, recessed all text.

Compatible Vehicles

GMC (all models)

Published Jun 27, 2026Updated Aug 11, 2026

Originally published on thingiverse.com by Andrew Courter (A05C) · License: CC BY-NC-SA

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