In older vehicles this is done via an Ignition Distributor, with newer vehicles using Multi-Outlet Coils with Ignition Leads connected directly to the Spark Plugs. HT Leads, ignition cable, plug leads, ignition wires.
This product would be ideal for individuals or businesses looking for a durable and reliable ignition cable kit for heavy-duty vehicles that require a high-quality and robust Intermotor 90919-21539 connection.