Single tower ignition coil

Single tower ignition coil with ignition module

Coil-on-plug (pencil coil) 

 Coil-on-plug ( pencil coil) with ignition module

Dual-fire/dual-tower compact ignition coil

Ignition coil rail ( four-tower coil pack )

Perfect for a four cylinder engine, or use two for a V8.Such as chevy ignition coil, shown as below

Four- tower coil pack( Such as volvo ignition coil ,as shown below)