U4 Pencil Coil
Dependent of car and engine type, either one coil is used for two cylinders, or, with twin spark engines, one coil per cylinder is needed.
Example standard (single spark plug technology) engine:
Four Cylinders- two similar coils "U4008" + cable set RC-SE45 (2 ignition leads)*
Coil one: Cylinder 1/4
Coil two: Cylinder 2/3
Example twin spark engine:
With twin spark engines, each cylinder has two spark plugs. Thus, a four cylinder engine has eight spark plugs.
Alfa Romeo 156 "twin spark"
Four cylinders - four similar coils " U4004" + cable set RC-AR1102 (4 ignition leads)*: