Dieselcowboy 210 #1 Posted March 20, 2013 Anyone know what size a 14mm spark plug would take to helicoil it? 12HP kohler engine. Share this post Link to post Share on other sites
rmaynard 15,915 #2 Posted March 20, 2013 I believe it is M14-1.25 Sent from my MB520 using Tapatalk 2 Share this post Link to post Share on other sites
rwilson 128 #3 Posted March 20, 2013 I think you can get a sparkplug helicoil kit at your local auto supplu store. they come with the tap and tool to install the helicoil. http://www.newegg.com/Product/Product.aspx?Item=9SIA00Y09J4788&nm_mc=KNC-GoogleMKP&cm_mmc=KNC-GoogleMKP-_-pla-_-Tool+Sets-_-9SIA00Y09J4788 1 Share this post Link to post Share on other sites
mortie806 0 #4 Posted March 24, 2013 auto parts store sell the coil Share this post Link to post Share on other sites
