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The Green Spark Plug Company£13.45Visit shop Ngk Iltr6a-13G 3789 Spark Plug Laser Iridium Iltr6a13g New Ngk-Iltr6a-13G
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The NGK ILTR6A-13G (3789) Iridium spark plug is designed for vehicle owners looking to restore or maintain peak engine performance and reliable ignition. It is ideal for DIY mechanics and car enthusiasts performing standard ignition system maintenance to ensure efficient combustion and smooth starting. While it offers superior durability compared to copper or platinum variants, users must verify engine compatibility specifically against their vehicle's OEM part number (such as L3G2-18-110 or L3Y1-18-110) before installation to ensure proper heat range and thread fitment.
| Model Part Number | NGK-ILTR6A-13G |
|---|---|
| Brand | NGK |
While iridium plugs generally last longer than standard plugs, follow the service intervals outlined in your vehicle's owner manual, typically ranging from 60,000 to 100,000 miles.
Iridium plugs are fragile; adjust the gap only if necessary and use a wire-type gap gauge to avoid damaging the center electrode.
NGK plugs are often pre-gapped from the factory, but you should always verify the gap with your vehicle's specific requirements before installation.
Never force the plug. Remove it and re-thread by hand to ensure you are not cross-threading the cylinder head.
Yes, the item listing is for a single spark plug (3789/ILTR6A-13G).
Check that the ignition coil is fully seated and the electrical connector is securely clicked into place.
Ensure the spark plug gap is set to factory specifications and check for underlying issues with ignition coils or fuel injectors.
Before installation, ensure your engine is completely cool to avoid damage to the aluminum cylinder head threads. Always verify your vehicle's compatibility by checking your owner's manual or matching the part numbers listed (L3G2-18-110, L3Y1-18-110). When installing, use a torque wrench to tighten the plug to the manufacturer's specified setting; over-tightening can crack the ceramic insulator. During routine service intervals, remove the plug to inspect for carbon buildup or electrode erosion to assess the overall health of your ignition system.
