The 851ECO Sparkplug Plug by Federal Mogul Champ Wagner Champion Eco Clean is a high-quality product designed for small engines. With dimensions of 0.8" in height, 2.46" in length, and 5.61" in width, this spark plug is compact and lightweight at 0.12 pounds. The package dimensions are also 0.8" in height, 2.46" in length, and 5.61" in width, with a package weight of 0.12 pounds. This product is a reliable choice for those looking for a durable and efficient spark plug for their small engine needs.