The CDI Electronics 631-0004 Spark Plug Wire Set is designed for 8-cylinder inboard/outboard marine engines. These wires deliver high voltage from the ignition coil to the spark plugs, ensuring efficient combustion and engine performance. Constructed to withstand harsh marine environments, they resist corrosion, heat, and moisture, which are common challenges in boat engines. CDI Electronics is a trusted name for marine ignition components, offering reliable parts for demanding applications.








