NGK IGR7A-G Iridium Spark Plug (3106)
Original price was: £28.64.£18.47Current price is: £18.47.
NGK IGR7A-G Spark Plug (Stock No. 3106)
This NGK iridium spark plug delivers a strong, consistent spark under hard use. The fine-wire iridium tip needs less voltage to fire, which helps cold starts, smoother idle, and reliable ignition at high rpm or under boost. It is a good choice for fast-road and track-driven petrol engines where heat control and knock resistance matter.
The R in the code means it is a resistor plug. This reduces electrical noise that can affect sensors and the ECU. Heat range 7 on the NGK scale suits higher performance setups compared with hotter road plugs.
Use the site’s vehicle lookup or check the Vehicle Fitment tab to confirm fitment for your engine.
| Part number | IGR7A-G |
|---|---|
| NGK stock number | 3106 |
| Category | 686 – Spark Plug |
| GTIN | 087295131060 |
| Plug type | Iridium centre, resistor type |
| Heat range | 7 (NGK scale – colder than standard road plugs) |
| Centre electrode | Fine-wire iridium tip (approx. 0.6 mm) |
| Ground electrode | High-strength nickel alloy with precious-metal pad |
| Seat type | Tapered seat |
| Pre-set gap | Factory set – check and adjust to your engine spec if required |
- Stronger spark for cleaner combustion and better throttle response.
- Stable under high cylinder pressure and temperature.
- Long service life compared with standard copper plugs.
Tip: Always torque to the manufacturer’s spec and verify the gap for your engine build.
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-3106 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
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DELIVERY INFORMATION
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DELIVERY INFORMATION
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Stock at Progressive Parts
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Products on the Progressive Parts website that meet this approval will be clearly marked or labelled EC or ECE approved.