Guest mike b Posted October 9, 2007 Simple one i know, but ive done a quick search, and checked the Haynes and no joy. What size socket/wrench do I need for the 1.9 spark plugs??! Thanks, Mike Share this post Link to post Share on other sites
jackherer 543 Posted October 9, 2007 They are 10mm spark plugs (thread size) and thats what the correct socket will say on it. They actually measure 16mm across the flats. Share this post Link to post Share on other sites
