10 pc NGK 49030 U1173 Ignition Coils for UF8 UF10 UF-8 UF-10 UC21 UC12 UC-21 so

NGK is a world leader in direct ignition technology, and provides five types of ignition coils, which cover 95% of the vehicles on the road today. NGK ignition coils, like NGK spark plugs, are manufactured to OE standards for the highest durability and operational performance, so they can be installed with OE confidence. NGK coil designs are developed and proven tough in an ISO 17025 accredited test lab at extreme conditions that are far beyond any operational environment that a vehicle would experience. If your vehicle fails to start, the engine misfires or the cars acceleration becomes increasingly poor, the fix the problem with an NGK ignition coil.

• Can-type Ignition Coils - In older vehicles and vintage cars, you might find can-type ignition coil. These are traditionally filled with oil for insulating, cooling and protection against moisture.
• Distributor Coils - An evolution of the can-type coil, distributor coils were widely used until the 1990s. The induced high voltage reaches the individual spark plugs via a mechanically driven distributor mechanism.
• Ignition Blocks - Ignition blocks contain several ignition coils, which are connected by H.T. cables to each plug. In single-spark ignition blocks, each ignition cable supplies the high voltage pulse to one cylinder. In dual-spark blocks, the high voltage pulse is fed simultaneously to two cylinders, one that is on the power stroke the other being on the exhaust stroke.
• Pencil or Coil on Plug Ignition Coils - This type is mounted directly on top of the spark plug. The high voltage pulse is fed straight to the spark plug, minimising power loss. Since pencil ignition coils are mounted in the spark plug tunnel, they do not take up space in the engine compartment. Pencil ignition coils are used in vehicles with electronic ignition systems and are available as single-spark or dualspark coils.
• Ignition Coil Pack Systems - So called coil packs combine a number of pencil ignition coils mounted within a single rail. This rail is then placed across a bank of several spark plugs.

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