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09.05.2021 12:51:52
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DENSO has been one of the world's leading pioneers of OEM quality spark plug technology since 1959. Continuous R&D work has achieved additional patented technologies for Aftermarket.
World's leading pioneers of OEM quality spark plug technology since 1959
1Specifications Include Termina
Included with the plug comes with a terminal nut compatible to the Nology Hot Wire and most plug cords around the world. Please remove for vehicle types that do not require terminals. (Some plugs have solid terminals. Please refer to the list.)
2Built-in, Highly Reliable Resister
All IRIDIUM RACING plugs specify a resistor, and contain a highly reliable monolithic-type resistor that blocks noise that may affect electronic devices. (IW06 has no resistor.)
3Highly Corrosion Resistant, Burnished Nickel Plating
Burnished nickel plating on the housing, a high level of corrosion resistance has been realized. Also, because the amount on the threads is low, the damage to the female thread in the cylinder is reduced.
4 0.4 mm Diameter Ultra-Fine Iridium Center Electrode
The center electrode tip is able to be made fine using a new iridium alloy with a high melting point. The required voltage is reduced, and ignitability is improved greatly.
5All-platinum Ground Electrode
Compared to the nickel alloy used in conventional spark plugs, the high melting point of platinum will reduce such problems as ground electrode melting and wear. Also, the 0.8mm platinum alloy is welded on and gapped without any bending, reducing residual stress and increasing durability.
6Insulators for Racing
By using a new, strengthened insulator which was developed during numerous and repeated testing during racing trials, strength is improved by 20%.
7Spark Cleaning Pocket
Between the center electrode and the insulator, a small pocket has been opened around the tip clearance. When there is carbon fouling or deposition, this part will discharge and burn off the carbon, restoring electrical resistance. This technology is patented by DENSO (Japan Patent No. 2727558).
8Silicone Oil Coating
During the start of the race, non-starting from carbon fouling and carbon deposits can be fatal. To stop this, the insulator has been coated with a silicone coating. Using the water repellency of silicone, the insulator surface is isolated from moisture and carbon, preventing a decrease in resistance.
9360° Laser Welding
The process used to join the iridium tip is a highly reliable “All-around Laser Welding” process that is able to withstand various kinds of driving conditions. here
It’s the age of iridium electrodes. Discover more acceleration with 0.4 mm DENSO Racing Plugs. DENSO would like you to try the 0.4 mm IRIDIUM RACING advantage.
Use IRIDIUM RACING and experience a ride like never before.
With an ultra-fine, 0.4 mm diameter center electrode, IRIDIUM RACING plugs are the realization of superb ignition performance and reguired voltage at unparalleled levels. Misfires have been controlled and will allow you to have steadily high levels of response and increased acceleration.
Through superb ignitability and reguired voltage, non-firing and misfires under a variety of conditions has been greatly reduced. As a result, combustion conditions have improved dramatically, increasing enginen output. here
Melting point: Compared with platinum, the melting point is approximately 680°C higher and it has the property of being hard to melt even under high temperature from electrical discharge or combustion.
Strength: Compared with other materials, it has greater material strength and is stable under various operating conditions.
Electricity: Because it has low resistance, even compared with platinum or nickel, it is suitable for spark plug electrodes.
Hardness: It is a tough material that is harder and stronger than other materials. here
Like platinum, iridium is a noble metal, and is characterized by its extremely high melting point and strength. Because of these properties, it is widely used in cutting-edge technologies in various industries such as the aerospace, medical, and automobile industries. Using a new iridium alloy developed independently by DENSO, the IRIDIUM series has achieved an extremely thin center electrode of just 0.4 mm in diameter. Just as it is easier for lightning to strike pointed objects, the thinner the center electrode of a spark plug, the more reliable its sparking will be. It maximizes engine performance and improves mileage and acceleration.
The IRIDIUM POWER series spark plugs are a performance-focused type, whereas the genuine iridium spark plugs of vehicle manufacturers are a maintenance (lifespan)-focused type. Although both use the same new iridium alloy, because their purposes are different, the electrode diameter and ground electrode specifications of each also differ. A feature of both types of iridium alloy spark plug is that the center electrode is thinner in comparison to the genuine spark plugs of vehicle manufacturers. The thinner the center electrode of the spark plug, the better its ignitability.
You can search for a spark plug to match your vehicle.
This website and the catalog (compatibility chart) and other printed materials are updated and released once a year. Compatibility information may change after the update and release. Also, please understand that vehicles launched after that date are not reflected in the information.
Please be aware that we accept no responsibility whatsoever for any damage due to usage that does not comply with the warnings and precautions for usage described in this webpage, or any malfunction, etc. arising from other external factors.
Please be sure to read. (Warnings and precautions regarding safety and usage)