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For a limited time only, enjoy Free Economy Shipping on orders over $100. Offer applies to shipments within the contiguous United States only, and excludes certain brands and items. Must select the "Free Shipping" option at time of checkout to receive promotion. Required subtotal of $100 or greater excludes sales tax.

Exclusions: Free Shipping Promotion excludes products by AWE Tuning, Corsa Performance, KW Suspension, Milltek, Neuspeed, and Wagner Tuning, as well as oversized items.

Please Note: Certain brands, products, and oversized items are not eligible for this free shipping offer. This Free Economy Shipping promotion is for a limited time only, and may change without notice.

Returns: The actual cost of shipping will be deducted from the refund/credit amount for items that are returned.

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Available Now: Audi 8S TTRS & 8V.5 RS3 Denso IKH01-24 Iridium Racing Spark Plugs

These Denso IKH01-24 spark plugs are ideal for cars with performance software upgrades and/or turbocharger upgrade kits running increased boost pressure. These long-life iridium spark plugs will outlast and outperform the factory spark plugs. These spark plugs are a recommended performance upgrade for the Audi 8S TTRS & 8V.5 RS3 2.5 TFSI ignition system, and replace part number 06K 905 601 M.


  • Pre-Gapped to 0.7mm
  • 0.4 mm. Iridium Tipped Laser Welded Fine Wire Center Electrode
  • 0.8 mm Fine Wire Pure Platinum Ground Electrode
  • Special Hardened Insulator is 20% Stronger for Hard Core Racing Applications
  • Patented Self Cleaning Electrode Design
  • Silicone Oil Coated Insulator to Repel Moisture and Carbon Buildup
  • Handles Extreme Compression and Boost Levels
  • Machine Rolled Threads Prevent Seizing or Cross Threading During Installation and Removal
  • 100% Pre-Fired to Assure the Highest Quality Possible
  • Purified Alumina Powder Insulator Provides Exceptional Strength and Thermal Conductivity
  • Five Rib Insulator Prevents Flashover
  • Copper-Glass Seal Bonds Center Electrode and Insulator for a Gas-Tight Seal


  • Plug
    • Thread Size - 14 mm
    • Hex Size - 16 mm
    • Reach - 26.5 mm
    • Seat Type - Gasket
    • Pre-Gapped - 0.7 mm.
    • Heat Range - 24 (Denso scale)
  • Center Electrode
    • Type - Fine Wire
    • Material - Iridium
    • Size - 0.4 mm
  • Ground Electrode
    • Type - Taper Cut
    • Material - Nickel
    • Size - 0.8mm
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