Close ×
Find a Part By:
  • Vehicle
  • Cross Reference

Searching for your parts in the DENSO part catalog is easy. Simply select the type of part you are looking for along with the year/make/model of your U.S. or Canadian vehicle. For vehicles in Latin America, please go here.

        or

        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.

        Spark Plug Electrode Configuration Identification

        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.