Motorcraft Suppressor Spark Plugs are designed and tested to meet OE specifications for durability and reliability under extreme conditions. They are built to maximize performance and are made from high-quality materials. They offer high resistance which ensures lasting durability. Model # SP400 Features: Delivers maximum voltage to the spark plug Reduces the chance of misfire Increases engine life Maximizes performance Resists corrosion and abrasion Item Dimensions: 4. 78" L x 1. 5" W x 1. 6" H.
