Spark plugs are an integral part of your engine, but they need to be replaced every so often. We'll tell you how to find out ...

Available as a 5/8" or 9/16" socket is LEXIVON's swivel magnetic spark plug socket. It's one of the more affordable magnetic sockets on our list, featuring a smooth 360-degree ball swivel with a ...

Other vehicles have spark plugs with hex head sizes ranging from 9/16 inches or 14 millimeters to ⅞ inches or roughly 22 millimeters. Many basic socket sets come with one or two spark plug ...