NGK IFR6T11 Laser Iridium Spark Plug (4589)
Original price was: £15.46.£10.10Current price is: £10.10.
NGK IFR6T11 (Stock No. 4589) – Laser Iridium Spark Plug
The NGK IFR6T11 is a long-life Laser Iridium spark plug designed for clean combustion, reliable starts, and stable idle. Its fine iridium centre tip needs less voltage to fire, helping maintain strong performance as mileage builds. A small platinum pad on the ground electrode reduces wear for long service intervals.
This plug is a common fit on many Toyota and Lexus petrol engines that specify a 14 mm, long-reach iridium plug with a 1.1 mm gap. Use the vehicle lookup or check the Vehicle Fitment tab to confirm.
Why choose this plug
- Strong spark and smooth running
- Improved throttle response and cold starts
- Long service life thanks to iridium and platinum tips
| Part Number | IFR6T11 |
| NGK Stock Number | 4589 |
| GTIN | 087295145890 |
| Category | 686 – Spark Plug |
| Type | Laser Iridium |
| Resistor | Yes |
| Heat Range (NGK) | 6 |
| Thread Diameter | 14 mm |
| Reach (Thread Length) | 19 mm |
| Seat Type | Gasket |
| Hex Size | 16 mm |
| Gap | 1.1 mm (pre-set) |
| Centre Electrode | Fine iridium tip |
| Ground Electrode | Nickel with platinum pad |
| Terminal | Solid SAE |
| Typical Tightening Torque | 20-25 Nm (with new gasket) |
Important: Do not force-adjust the gap on iridium plugs. Always install into a cool engine, start by hand, and torque to spec. Use the site’s vehicle lookup to confirm fitment.
The price displayed is for a single plug, please add the desired amount to your basket.
| Weight | 0.05 kg |
|---|---|
| Dimensions | 10 × 3 × 3 cm |
| Brand |
NGK-4589 Confirmed Fitment
Please note, this information is a combination of supplier provided compatibility data and our workshop expertise. While every effort has been made to ensure the accuracy of this information Progressive Parts Ltd are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their vehicle. More information is available from our Terms & Conditions
UK Shipping
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DELIVERY INFORMATION
International Shipping
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DELIVERY INFORMATION
Returns
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Stock at Progressive Parts
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1+ IN STOCK in green stock is readily available in one of our warehouses for express delivery (at the time of viewing).
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0 IN STOCK in orange means everybody we work with is unfortunately out of stock. Stock is not available in the UK. The best course of action is to place an order to create an allocation from the next batch arriving.
OUT OF STOCK in red. This product is unavailable to order, for whatever reason we're unable to obtain stock or there is an issue with supply/lead times.
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Type-approval then, is a certain guarantee that an end user will receive a product of OE equivalent performance attributes.
Products on the Progressive Parts website that meet this approval will be clearly marked or labelled EC or ECE approved.