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Hella Ignition Coil - 5DA358168-781

Hella Ignition Coil - 5DA358168-781

The Hella Ignition Coil (5DA358168-781) is an OE-quality replacement part designed for reliable en...

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eBayHELLA 5DA 358 168-781 IGNITION COIL
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£30.33
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AutodocHELLA Ignition coil HYUNDAI,KIA 5DA 358 168-781 2730103AA0,2730103AA0 Coil pack,Ignition coil pack,Engine coil,Engine coil pack
£8.45 delivery
£42.44
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Product Information

Full details

The Hella Ignition Coil (5DA358168-781) is an OE-quality replacement component designed for Kia and Hyundai owners seeking to restore reliable engine performance and consistent ignition timing. This 12V pencil-style coil is ideal for DIY mechanics and professionals managing 1.4 T-GDI engine maintenance, though users must be diligent about verifying compatibility with the 27301-03AA0 OEM part number to avoid installation errors.

All features

Model Part Number5DA358168-781
BrandHella

Extended Product Information

FAQs

Does this coil fit all 1.4L engines?

No, it is specific to models requiring OEM part 27301-03AA0. Always verify your specific VIN or part number.

Do I need to replace all coils at once?

It is often recommended to replace the entire set if your vehicle has high mileage, but you can replace just the failed unit if necessary.

Is this a direct fit or do I need adapters?

This is a direct-fit, OE-style replacement and does not require any adapters.

How do I know if my ignition coil is bad?

Symptoms include engine misfires, rough idling, poor acceleration, and an illuminated check engine light.

Should I apply grease to the coil boot?

Yes, a light coating of dielectric grease helps seal the connection and prevents the boot from sticking to the spark plug.

Troubleshooting

Engine continues to misfire after installation

Check the 4-pin connector for bent pins or debris; ensure the spark plug is also in good condition.

Bolt hole does not align perfectly

Verify that the coil is fully seated into the spark plug well; it should be flush with the engine head.

Check engine light remains on

Use an OBD-II scanner to clear the stored fault codes after installation to see if the error returns.

Pros and Cons

Pros

  • Matches original equipment specifications for reliable performance
  • Easy installation via standard bolted mounting points
  • High-durability construction ensures long-term heat resistance
  • Prevents misfires and optimizes fuel efficiency

Cons

  • Requires verification against specific OEM part number 27301-03AA0
  • Not compatible with all engine types despite physical similarities
  • Electrical components are often non-returnable once installed

Setup, Compatibility & Care

To install this ignition coil, ensure the engine is completely cool to avoid thermal injury and to prevent damage to the cylinder head threads. Remove the engine cover to access the ignition rail, unplug the 4-pin electrical connector, and remove the mounting bolt. Pull the old coil upward, insert the new Hella unit, and secure it with the original bolt. Always use a small amount of dielectric grease on the inner boot for a better seal against moisture. Before purchasing, verify your vehicle's engine code and match the part number 27301-03AA0 to ensure full compatibility, as these engines have several variants. Regularly inspect the harness connector for signs of corrosion or melting during routine oil changes.

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