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    Search for cross reference part numbers for other manufacturers of the parts you're looking for.

    Cross Reference information is provided as a guide only. Please refer to the "Applications" lookup tabs for more detail. Materials and designs will differ among brands, so plugs are not exactly alike. Always check with your OE service manual for proper installation and settings.

    IKH Series

    IKH16, IKH20, IKH22, IKH24, IKH27

    • 14mm diameter X 26.5mm length long reach type.
    • For Subaru 3 Liter, Nissan, Peugeot, Citroen, and Yamaha Marine.

    IK Series

    IK16, IK20, IK22, IK16L, IK20L, IK16G, IK20G, IK22G, IK24, IK27, IK31, IK34

    • Mainly used for cars. ISO type.
    • 14mm diameter X 19mm length type.
    • K22 and above are for tuned engines, with a spark gap of 0.8mm.
    • IKoL is extended type (spark position 5mm).
    • IKoG Stainless Steel Gasket.

    IWM Series

    IWM24, IWM27, IWM31

    • This type has a gasket face height shortened by approximately 10mm from the IW Type.
    • The Iridium Power version of the IWM01-Iridium Racing plugs.
    • Sold as street-use plugs for 2-cycle 250cc sports bikes.
    • For Honda NSR250, Yamaha TZ250R, Suzuki RGV250 ? (Gamma), Aprilia RS250, KTM260, 300, and 380 (’99 and later).
    • Can also be used for water cooled kart engines.

    IWF Series

    IWF16, IWF20, IWF22, IWF24, IW27

    • 14mm diameter X 12.7mm length short reach type.
    • IWF27 utilizes the heat resistance of the iridium electrode to extend the spark position 0.5mm (1.0?1.5mm)
    • Harnessing the low required voltage of the 0.4mm diameter Iridium, the gap is wider than in standard types (0.7?0.8mm). Ignitability is increased even further.

    IT Series

    IT16, IT20, IT22, IT24, IT27

    • 14mm diameter X 17.5mm length tapered seat type.
    • For use with GM, Ford, Citroen, Jaguar, Peugeot, Volvo, Mercedes-Benz, Lancia, Renault, Audi, and Mazda.

    ITF Series

    ITF16, ITF20, ITF22, ITF24, ITF27

    • 14mm diameter X 11.2mm length tapered seat type.
    • For use with GM and Ford.

    IX-B Series

    IX22B, IX24B, IX27B

    • 12mm diameter X 19mm length fully threaded type.
    • Compared to the IX type, the insulator projection is extended 0.9mm (0.6?1.5mm), resulting in a wider heat range.
    • The spark position is projected 0.8mm more than the IX type. (2.0?2.8mm).
    • 18mm Hex

    IXG Series

    IXG24, IXG27

    • The Iridium Power versions of the 2mm shroud type plugs (X24/27GP-U) used by Honda.
    • Applicable to CB400SS. An expansion of applications is planned.
    • Applicable to Honda CB400SS, XR400RR, CL400/RS, XLR250R, CBX250S, FTR250, CBX400F, XR250R

    IUH Series

    IUH24, IUH27

    • 10mm diameter X 19mm length half-threaded type.
    • Using the high heat resistance of the iridium electrode, the spark position is extended 0.4mm compared to standard type (1.6?2.0mm).
    • For Honda

    IUF Series

    IUF22, IUF24, IUF14-UB

    • 10mm diameter X 12.7mm length short reach type.
    • Using the high heat resistance of the iridium, the spark position is extended 0.4mm compared to standard types (1.6?2.0mm).
    • Harnessing the low required voltage of the 0.4mm diameter iridium, the spark gap is wider than in normal types (0.7?0.8mm).

    IQ Series

    IQ16, 1Q20, IQ22, IQ24, IQ27, IQ31, IQ34

    • Mainly used for cars.
    • 14mm diameter X 19mm length type.
    • IQ22 and above are tuned engines, with a spark gap of 0.8mm

    IW Series

    IW16, IW20, IW22, IW24, IW27, IW29, IW31, IW34

    • 14mm diameter X 19mm length fully threaded type.
    • IW16 to 22 are focused on ignitability with a 1.5mm projection, whereas IW24 to 34 are focused on heat resistance with a projection of –1.5mm.
    • The spark position of IW24 to 34 is projected 0.5mm compared to normal (1.0?1.5mm).

    ITV Series

    ITV16, ITV20, ITV22, ITV24, ITV27

    • 14mm diameter X 25.0mm length tapered seat, long reach type.
    • For the Ford Focus, Mondeo, Escape; Chevrolet Blazer and Mazda Tribute.

    ITL Series

    ITL 16, ITL20

    • 14mm diameter X 25.0mm length tapered seat, long reach type.
    • Designed so that the head of the plug is 6mm higher than in the ITV.
    • For the Chrysler PT Cruiser and Voyager.

    IXU Series

    IXU22, IXU24, IXU27

    • 12mm diameter X 19mm length fully threaded type.
    • The insulator is fully projected (1.5mm), creating a wide heat range and greater ignitability.
    • 16mm Hex
    • For use with small cars and imported motorcycles such as Ducati.

    IX Series

    IX22, IX24, IX27

    • 12mm diameter X 19mm length fully threaded type.
    • Using the high heat resistance of the iridium electrode, the spark position is projected 0.4mm more than in standard types. (1.6?2.0mm).
    • Harnessing the low require voltage of the 0.4mm diameter iridium the gap is wider than in the standard types (0.7?0.8mm). A further increase in ignitability.
    • 18mm Hex

    IU Series

    IU20, IU22, IU24, IU27, IU31

    • 10mm diameter X 19mm length fully threaded type.
    • Harnessing the low required voltage of the 0.4mm iridium center electrode, the spark gap is wider than in normal types. A further increase in ignitability.
    • For motorcycles such as Yamaha and Kawasaki, also for Ferarri, Maserati, and Alfa Romeo.

    IU-A Series

    IU24A, IU27A, IU31A

    • 10mm diameter X 19mm length fully threaded slant ground electrode type.
    • Harnessing the low require voltage of the 0.4mm diameter iridium, the gap is wider than in normal types (0.7?0.9mm). Ignitability is greatly increased.
    • By making this a single electrode, the spark location is stabilized compared to normal types (double ground electrode), securing an ideal combustion condition.

    IUF-A Series

    IUF27A, IUF31A

    • 10mm diameter X 12.7mm length short type.
    • Ideal for Gorilla/Monkey Racing.
    • The ground electrode has a slant shape, reducing the thermal stress on it.

    IY Series

    IY24, IY27, IY31

    • 8mm diameter X 19mm length tapered seat, half thread type.
    • The world’s first 8mm thread diameter iridium plug.
    • Can be used with Honda Smart Dio (’04-), VFR400, RVF400, Kitaco Monkey Head, and NR750.