Looking for in-stock aftermarket parts to modify or upgrade your Hummer H3 with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories for your H3.
Whether you have a 2007 or 2010 Hummer H3 in Base to X trim we have you covered. We have 2 spark plugs available to mod your H3. All parts have free shipping to the Continental US 48 States.