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NGK IKR7D Spark Plug - 4759

NGK IKR7D Spark Plug - 4759

NGK Standard Spark Plug IKR7D 4759 Sparkplug - Premium Quality - Perfect Fit. Always check this pr...

Best current price£15.98from The Green Spark Plug Company

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The Green Spark Plug CompanyNgk Ikr7d 4759 Spark Plug Iridium New Ngk-Ikr7d
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eBayNGK Standard Spark Plug IKR7D 4759 Sparkplug - Premium Quality - Perfect Fit
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Product Information

Full details

The NGK IKR7D 4759 Spark Plug is designed for automotive enthusiasts and DIY mechanics who require a high-performance, iridium-tipped ignition component to maintain optimal engine efficiency. Featuring an iridium middle electrode and precise 12mm thread diameter, this plug provides reliable ignition and long-lasting durability; however, users must strictly verify vehicle compatibility via a manufacturer lookup, as incorrect plug specifications can lead to engine performance issues or damage.

All features

Model Part Number4759
BrandNGK

Extended Product Information

FAQs

Does this plug come pre-gapped?

Yes, the NGK IKR7D comes pre-gapped. Consult your vehicle's service manual to confirm if the factory setting meets your specific engine requirements.

Can I use a wire brush to clean this plug?

It is not recommended to use a wire brush on iridium plugs, as this can damage the fine electrode tip. If the plug is heavily fouled, it should be replaced.

What does the 5 kOhm suppression mean?

The integrated 5 kOhm resistor helps suppress electromagnetic interference, ensuring that your car's radio and electronic sensors are not affected by ignition noise.

Is the spark plug sold in sets?

No, this product is sold as a single unit (1 unit).

How often should I replace these iridium plugs?

While iridium lasts longer than standard copper, always follow the replacement interval specified in your vehicle's owner manual.

Troubleshooting

Engine misfiring after installation

Verify that the ignition coil or spark plug wire is fully seated on the fixed SAE connector and check that the plug was torqued correctly.

Rough idling

Ensure the thread length matches your vehicle requirements and that no debris entered the cylinder during the installation process.

Difficulty threading into the cylinder head

Remove the plug immediately and inspect the cylinder head threads. Never force a plug that does not thread smoothly by hand.

Pros and Cons

Pros

  • Iridium construction ensures extended longevity compared to standard copper plugs
  • Excellent resistance to oxidation and electrical wear
  • Integrated interference suppression protects vehicle electronics
  • High-quality gasket seat provides reliable combustion sealing

Cons

  • Requires specific tool size (16mm) for installation
  • Non-adjustable gap; must be used exactly as specified
  • Can be sensitive to improper torque during installation

Setup, Compatibility & Care

Before installation, always confirm the `4759` part number matches your vehicle's service manual or manufacturer specifications.

  1. Preparation: Ensure the engine is cool. Clean the area around the old spark plug port to prevent debris from entering the cylinder.
  2. Removal: Use a 16mm spark plug socket to carefully remove the old plug.
  3. Installation: Hand-thread the new NGK IKR7D plug to avoid cross-threading the cylinder head.
  4. Torquing: Use a torque wrench to tighten the plug to the manufacturer's specified setting, ensuring the gasket seat is properly compressed.
  5. Maintenance: Periodically inspect the electrode during routine maintenance intervals to check for signs of carbon buildup or abnormal wear.

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