This item is called an Ignition Coil (also known as a Coil Pack or Plug Coil).
It is a car engine electrical component that supplies high voltage to the spark plugs to ignite the fuel in the engine. These are commonly used in Toyota, Ford, Mazda, Nissan, Honda, and many other vehicles.
For marketing on Jiji, you can name it:
Original Ignition Coil
Engine Plug Coil
Car Ignition Coil Pack
High Performance Ignition Coil
Category on Jiji:
Vehicle Parts & Accessories → Engine & Drivetrain Parts
Short marketing description:
Durable and high-performance ignition coil for smooth engine start, better fuel efficiency, and stable driving performance. Compatible with selected vehicle models.