STM Spark Plug Gapper Tool

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! Please confirm the thread size for your plugs before purchase.

Vehicle Fitment:
• For 12mm or 14mm spark plug threads
• See fitments below

Features:
• USA-made
• Billet aluminum
• Super easy to use tool

12mm Gapper Tool for:
Mitsubishi Lancer Evolution X
Nissan R35 GT-R
Nissan 350Z 2007 - 2009
Nissan 370Z 2009 - 2016
Infinity G35 11/2006 - 2008
Infinity G37 2008 - 2013
Subaru BRZ
Scion FR-S
Subaru 2015+ FA20 WRX

14mm Gapper Tool for:
Mitsubishi Lancer Evolution 1/2/3/4/5/6/7/8/9
Mitsubishi 1G/2G DSM (Eclipse/Talon/Laser)
Mitsubishi 3000GT
Dodge Stealth
Subaru STi 2004-2018
Subaru WRX 2002 - 2014
Nissan 350Z 2003 - 2006
Infinity G35 2003 - 10/2006
Ford Focus ST 2013 - 2017
Ford Focus RS 2016 - 2017
Lamborghini Huracán
Lamborghini Gallardo
Audi R8 V8/V10
Toyota GR Corolla/Yaris