ProGreenGrass.com supplies a spark plug cross reference chart that compares Champion spark plug part numbers to those of other brands. While the Champion Spark Plugs site doesn't provide a cross reference chart, it has a look-up feature that lets users input a competitor's part number to find the Champion equivalent.
Champion makes spark plugs for automobiles, power sports vehicles, boats and lawn mowers, as well as for commercial, agricultural and industrial vehicles. Its Performance line of spark plugs are intended for use in race cars. Champion's website offers product details on all its spark plugs, provides a store locator to help shoppers find the products, and as of September 2015, offers a rebate on Champion spark plugs that runs until the end of 2015.