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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.

    Iridium Power

    Iridium Power

    Example: IK16

    With an Ultra-fine Iridium Alloy Center Electrode Employing a high melting point iridium alloy for the center electrode tip, a fine diameter of 0.4mm has been realized. This fine electrode has led to a lower spark voltage and a large increase in ignitability, which draws even more output and accelerator response from the engine. (Melting Point: Iridium: 2454º C, Platinum: 1769º C).

    Iridium Long Life

    Iridium Long Life

    Example: SK16R-P11, SK20R11, FK20HR11

    Developing the world’s pioneering 0.7mm dia. Ultra-fine Iridium alloy, ignitability, and lifetime are improved dramatically.

    U-Groove

    U-Groove

    Example: W16EX-U
    • With a U-Groove ground electrode, large ignition energy can be obtained, easily igniting even lean mixtures.
    • Because it is fully projected (2.5mm insulator projection), carbon fouling is reduced, and smooth starting and acceleration performance is realized.
    Iridium TT

    Iridium TT

    Example: 1W16TT
    • Iridium TT Twin-Tip Technology was developed from the Original Equipment Specification Super Ignition Plug (SIP) design, fusing our patented 0.4mm diameter Iridium- Rhodium alloy Center Electrode with an OE style 0.7mm Platinum Tip Ground Electrode.
    • Combines the power and torque of a high-performance plug with the endurance of a long-life original equipment spark plug over 100,000 miles.
    Platinum TT

    Platinum TT

    Example: PW16TT
    • Platinum TT Twin-Tip Technology enables faster flame propagation for more complete combustion.
    • 1.1mm PT Center Electrode with a Titanium-Enhanced Tip Ground Electrode.
    • Improved Fuel Economy, better acceleration, and faster starts.
    Single Platinum

    Single Platinum

    Example: Q20PR-P11, K16PR-TP11
    • Only the center electrode is platinum tipped (1.1mm dia) which increases fuel consumption, drivability, and durability
    • K16PR-TP11 has had the ground electrode taper cut, further increasing ignitability.
    Extended Platinum

    Extended Platinum

    Example: PKJ20CR-L11

    By extending the spark position into the combustion chamber, the combustion efficiency is increased and fuel consumption and drivability are improved.

    Dual Electrode Platinum

    Dual Electrode Platinum

    Example: PK20TR11
    • The parts of the center electrode facing the ground electrodes have been platinum tipped.
    • The dual-electrode construction results in a lower required voltage during the plus (+) discharge.
    Extended2

    Extended

    Example: KJ20CR-L11
    • For Mazda and Mitsubishi Vehicles.KJ20CR11 has no U-groove. KJ20CR-U11 has a U-groove.
    Semi-Surface

    Semi-Surface Gap for Rotary Engines

    Example: J16AR-U11
    • Employing a semi-surface gap discharge, ignitability, fouling resistance, and durability have been increased.
    • Reduced voltage loss using a 7-rib design.
    Extended

    Extended

    Example: KJ20CR11, KJ20CR-U11
    • Using a U-grooved ground electrode, a large ignition performance is obtained, allowing even lean mixtures to be ignited easily.
    • The spark position is extended into the ignition chamber, improving combustion efficiency, fuel consumption, and drivability.
    Extended2

    Extended

    Example: KJ20CR-L11

    For Mazda and Mitsubishi Vehicles.KJ20CR11 has no U-groove. KJ20CR-U11 has a U-groove.

    Long Life SIP

    Iridium Long Life SIP (Super Ignition Plug)

    Example: FK20HR11, FXE20HR11
    • Revolutionary DENSO Needle-to-Needle OE Technology
    • Fine wire 0.55mm Iridium Alloy center electrode
    • 0.7mm Platinum needle tipped ground electrode
    • For exceptional performance and durability
    Semi-Surface Gap

    Semi-Surface Gap

    Example: W20EKR-S11, W20EPR-S11
    • Using a semi-surface discharge, ignitability and fouling resistance are increased.
    • W20EKR-S11 are for Honda vehicles, while W20EPR-S11 are for Mitsubishi vehicles.
    Semi-Surface Double Electrode

    Semi-Surface Double Electrode

    Example: W20ETR-S11
    • A double ground electrode with a 1mm gap is used and fouling resistance is improved.
    • Using a short opposed-type dual ground electrode, excellent durability is obtained.
    • Improved ignitability due to full projection.
    • Used for Toyota and Daihatsu.
    Shrouded Semi-Surface Gap Double Electrode

    Shrouded Semi-Surface Gap Double Electrode

    Example: K20DTR-S11, W20DTR-S11
    • In addition to a semi-surface gap construction, the end of the threaded portion has been extended into the combustion chamber, and a shroud has been attached to improve fouling resistance.
    • Used for Daihatsu and Subaru.
    Triple Electrode

    Triple Electrode

    Example: K22PB, W20EPB
    • Durability is increased with triple ground electrodes.
    • For Audi, VW, Citroen, Fiat, Mercedes-Benz, Renault.
    Double Platinum for D.I.

    Double Platinum for D.I.

    Example: PK20R-P11

    To prevent wear during plus (+) discharge, the size of the platinum has been increased on the ground electrode.