DENSO SPARK PLUGS

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	Needle to needle Iridium Plug (Example) FK20HR11 The ground electrode of this revolutionary iridium plug features DENSO's very own technology and is needle-shaped, resulting in an unparalleled reduction in quenching action. Used in the Toyota Sienta and the Toyota Crown since 2003.


	Iridium Plug (Example) SK16R-P11, SK20R11 We developed the 0.7mm diameter ultra-fine iridium alloy electrode, the first the world. Ignitability and lifetime have been improved dramatically. SK16R-P11 comes standard with the Toyota Century.


	New Triple Electrode Iridium Plug (Example) SK20BR11 During regular operation, it sparks with the main electrode, but when it becomes fouled, it sparks with the side electrodes to burn off the carbon - this plug is the optimum design for direct injection engines. It comes standard with the Toyota Crown's 3R direct injection engine (D-4).


	U-Grooved Plug (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.


	Platinum ZU Plug (Example) W31ES-ZU With a taper-cut ground electrode, quenching action is dramatically reduced, increasing ignitability. With a special platinum alloy in the center electrode (0.7mm dia.). The attached part is spot welded in three locations for a high degree of reliability.


	Platinum Plug (Example) PK20R11 Platinum is used in both the center electrode and the ground electrode. By making the center electrode fine and by using a platinum tip, fuel consumption, drivability, and durability have been increased.



	Platinum Plug for DLI (+ -Discharge) (Example) PK20R-P11 To prevent wear during plus (+) discharge, the size of the platinum has been increased.



	Extended Platinum Plug (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 Plug (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-Side Platinum Plug (Example) Q20PR-P11, K16PR-TP11 Only the center electrode is platinum tipped, allowing the electrode to be made fine which increases fuel consumption, drivability, and durability. K16PR-TP11 has had the ground electrode taper cut, further increasing ignitability.


	Semi-Surface Gap Plug for Rotary Engines (Example) S29A Employing a semi-surface gap discharge, ignitability, fouling resistance, and durability have been increased. Reduced voltage loss using a 7 rib design.



	Extended Plugs Because these are specialty plugs, installation on any other than the specified vehicles is not possible. (Example) J16AR-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.


	(Example) KJ20CR11, KJ20CR-U11 For Mazda and Mitsubishi Vehicles. KJ20CR11 has no U-groove, KJ20CR-U11 has a U-groove.



	(Example) KJ20CR-L11 The ground electrode is taper cut and the center electrode is made finer, improving ignitability.



	(Example) J16AY Specifically for Daihatsu, there are two ground electrodes, ensuring durability.



	Semi-Surface Gap Plug (Example) W20EKR-S11, W20EPR-S11 Using a semi-surface discharge, ignitability and fouling resistance are increased. W20EKR-S11 are for Honda vehicles, while W20EPR-S11are for Mitsubishi vehicles.



	Semi-Surface Double Electrode Plug (Example) W20ETR-S11 A double ground electrode with a 1mm gap is used. Using a short opposed-type dual ground electrode, excellent durability is obtained. Improved ignitability because it is fully projected. With the new addition of a supplementary gap, fouling resistance is improved. Used for Toyota and Daihatsu.


	Shrouded Semi-Surface Gap Double Electrode Plug (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 Plug (Example) K22PB, W20EPB Durability is increased with triple ground electrodes. For Audi, VW, Citroen, Fiat, Mercedes-Benz, Renault.



	Small Hex Plug (Example) Q16R-U11, Q16PR-U11 By reducing the hex size (16mm), the plug has been made smaller.



	ISO Compatible Small Hex Plug (Example) K16R-U11, K16PR-U11 This product is compatible with ISO standards. *Because the installed height (H) is 2.5mm shorter than with the Q type, be careful during installation.



	Small Plug for Small Cars (Example) XU22EPR-U By reducing the hex size (16mm), the plug has been made compatible with small cars. Thread size is 12mm.



	Long Housing Plugs (Example) QL20PR-U, QL20TR-S By making the middle cylinder longer, installation dimensions have been secured. Exclusively for Daihatsu. QL20TR-S has double ground electrodes and a semisurface gap resulting in improved anti-fouling properties.



	TaperSeat Plug (Example) T16EPR-U Solely for non-Japanese vehicles that do not have a gasket.



	Motorcycle Plugs (Example) X24GPR-U Because the thread end has a 3mm shroud, and the reach is 22mm, it can be used only for the specified vehicles. For Honda.



	(Example) X24EPR-U9 12mm Diameter X 19mm Length



	(Example) W27EMR-C Plug with a compact insulator head. For Suzuki and Honda.



	(Example) U27FER9 A 10mm Diameter X 19mm Length, half-threaded. With a wider gap of 0.9mm compared to conventional plugs (0.6 to 0.7mm), this plug has improved ignitability. For Honda.



	(Example) U31ETR With double ground electrodes, heat resistance is improved. For Kawasaki and Suzuki.



	(Example) U27ESR-N 10mm Diameter X 19mm Length, fully threaded. By making the projection 0.5mm greater, fouling resistance has been improved. For Kawasaki, Suzuki, and Yamaha.



	(Example) U20FSR-U 10mm Diameter X 12.7mm Length.



	(Example) Y27FER Very Miniature Plug (8mm Diameter X 19mm Length, half-threaded). Cannot be used on any other than the specified vehicles. For Honda.



	Resistor Plug Reduces the amount of radio noise generated during ignition. Reduced Radio Noise By adding a 5kΩ resistor between the center electrode and the center electrode core, we have created a plug that has less radio noise during ignition. With the increasing number of electronic devices on vehicles, most new cars today come standard with resistor plugs.