Spark Plug Electrode Configuration Identification

 

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

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

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 are realized.

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

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.

Double Platinum

Example: PK20R11

  • Platinum is used in both the center electrode and the ground electrode.
  • By making the center electrode (1.1mm dia) and by using a platinum tip, fuel consumption, drivability, and durability have been increased.

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

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.

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.

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

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.

Extended

Example: KJ20CR-L11

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

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

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

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

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

Example: K22PB, W20EPB

  • Durability is increased with triple ground electrodes.
  • For Audi, VW, Citroen, Fiat, Mercedes-Benz, Renault.

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.

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

Example: K22PB, W20EPB

  • Durability is increased with triple ground electrodes.
  • For Audi, VW, Citroen, Fiat, Mercedes-Benz, Renault.

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.

Find My Part

Use our online catalog... Click Here

Where to Buy

Use our dealer locator... Click Here