STM Spark Plug Gapper Tool
For 12mm or 14mm spark plug threads
See fitments below
The STM Spark Plug Gapping Tool allows for easy handling of your spark plug and gauge for for a smooth, controlled and precise gap. So you can stop banging your plugs on random hard surfaces!
Available for both 12mm or 14mm spark plug threads. Purchase them individually, or buy the set of 2!
Please confirm the thread size for your plugs before purchase.
• Billet aluminum
• Super easy to use tool