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NGK Iridium IX Spark Plugs (Set of 4) +1 Step Colder | Gen 2 Turbo MINI Cooper

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NGK Iridium IX Spark Plugs (Set of 4) +1 Step Colder | Gen 2 Turbo MINI Cooper

NGK Iridium IX Spark Plugs (Set of 4) +1 Step Colder | Gen 2 Turbo MINI Cooper



Designed specifically for the performance enthusiast. Iridium IX S spark plugs offer extreme ignitability, improved throttle response and superior anti-fouling.

  • Sold in a set of 4
  • Fine Iridium tip ensures high durability and a consistently stable spark
  • Platinum Ground Electrode
  • 0.6mm laser welded Iridium tip
  • 16mm (5/8") standard hex wrenching design
  • GAP-preset at 0.024" (0.6mm)
  • Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines
  • Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency and durability
  • Ultimate design, technology and performance.
  • Iridium alloy is extremely durable against heat, corrosion, and electrical wear
  • Tapered ground electrode to minimize "quenching effect"

Select desired heat range when ordering.


  • Standard heat range Plugs are recommended for ALL Street Driven Turbo MINIs with all levels of modification.
  • +1 Colder plugs are intended for cars with extreme performance engine mods, Stage 3 Manic Tunes and sustained high RPM track driving running 100+ octane fuel. Not recommended for street driven cars.  Standard heat range plugs are recommended for all street driven cars.
  • Spark Plugs are not refundable or returnable

Shipping & Returns

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. The complete return and refund policy can be forund here. M7 Return and Refund Policy!


FREE SHIPPING and Restrictions:

Free shipping on most all orders greater than $99USD to all mainland 48 US States. Some large items (greater than 50 lbs or dimensions greater than 36" may incur an additional handling fee. If FREE Shipping is offered M7 Speed has the option of which carrier to use. If you require a specific carrier (IE:FedEx or UPS or USPS) then you must select that at checkout and you will be charged for that specific shipping. The complete M7 Shipping Policy can be forund here. M7 Shipping Policy!

Shipping for International Orders:

We ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to select international destinations. International orders are classified as those shipping outside of the U.S., Canada, or U.S. territories.
ATTENTION: International Customers | All international orders are shipped EXWORKS which means that you are responsible to pay any and all customs fees, taxes and brokerage fees due. These fees and taxes and are not included in the base shipping charges. The additional fees will collected at the time of delivery.

If the shipping option, you want isn’t available please contact us at for a custom shipping quote. If postal service is selected for International shipping by the buyer for delivery service be aware that once the package leaves the US Customs center is no longer the responsibility of the US Postal Service or M7 and tracking information will not be updated are available. Worldwide transit times may vary and your package could take up to 6 weeks to arrive at its destination. We strongly advise against using postal for any international shipping.

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