For maximum performance under the most extreme conditions, you can’t go past DENSO Iridium Power spark plugs. Through patented technology, including a 0.4mm diameter centre electrode - the Iridium Power plug produces the hottest, most concentrated spark with the lowest voltage and outperforms any plug today.
It is no secret that Iridium is 6 x harder, 8 x stronger and could take temperatures of 650 degrees C hotter than platinum (i.e. exceeding 2454 degrees C).
Through patented technology, including a 0.4mm diameter centre electrode - the Iridium Power plug produces the hottest, most concentrated spark with the lowest voltage and outperforms any plug today.
The DENSO difference:
Iridium Power uses DENSO’s patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.
At 0.4mm in diameter, the DENSO Iridium Power center electrode tip is the world’s smallest.
Produces the hottest, most concentrated spark, while requiring the lowest voltage
Produces maximum performance under the most extreme conditions
Laser Welding
There wasn’t a welding tool hot enough to melt an iridium electrode tip to a nickel base. That is until DENSO pioneered their patented Laser Welding Process that provides a 360° seal so reliable the electrode resists wear even in the worst conditions.
Improved Firing Performance
To improve firing performance, the contact area between the electrode and the flame nucleus needs to be reduced in size. This is why the electrode was made as fine as possible to a diameter of 0.4mm. Compared to normal Spark Plugs, with a spark gap of 0.8mm, the ignitability limits are better by 2.5.
Lower Required Voltage
The required voltage in the Iridium Power plugs is between 3 & 5 kv less than normal plugs. This is due to the ultra-fine 0.4mm diameter ground electrode and U-groove design. Because required voltage is kept low, Iridium Power can be used in high performance engines and for high response driving.
Smoother Idling
When an engine is idling, firing can become particularly bad. Because Iridium Power plugs have a low required voltage and high ignitability, sparking continues to work properly during idling. Whereas normal plugs have highly variable revolution counts, Iridium Power plugs maintain very smooth idling. Also, because combustion is good, the explosive energy raises the revolution count.
Improved Engine Performance
Iridium Power spark plugs enhance the performance of an engine. Acceleration is improved when compared against normal spark plugs.
Decreased Fuel Consumption
When Iridium Power spark plugs are used, accidental fire and misfiring rarely occurs under various driving conditions. Therefore, combustion is extremely good. In turn, a healthy engine can be maintained and fuel consumption improved.
1.Specifications Include Terminal
A terminal nut is attached that fits with most of the world’s spark plug cables. Please remove the nut for installations that do not require one. (The terminal nuts on the IWM and IK-G types are solid parts and cannot be removed.)
2.Built-in, Highly Reliable Resistor
All IRIDIUM POWER plugs include a highly reliable, 5,000 ohm monolithic resistor specification to reduce electromagnetic noise that may affect electronic devices. (For all plug types)
3.Highly Corrosion Resistant, Burnished Nickel Plating
The plug housing is plated with burnished nickel, the same as plugs used for racing. It is highly resistant to corrosion and rust even while touring in continually rainy weather and during motocross events. (Low-heat range types excluded)
4.360° Laser Welding
The process used to mount the iridium tip is a highly reliable “All-around Laser Welding” process that is able to withstand all kinds of driving conditions. (For all plug types)
5.Projected Center Electrode
In order to improve ignitability, the center electrode protrudes more than with conventional type plugs. This improves both acceleration response time and performance.(Only with: IU31, IUH24, IUH27, IX22, IX24, IX27, IUF22, IUF24, IWF22, IWF24, IWF27, IW24, IW27, IW29, IW31, and IW34)
6.0.4 mm Diameter Ultra-fine Iridium Center Electrode
Using a new iridium alloy with a very high melting point, the tip of the electrode can be made very fine. This enables the reduction of voltage necessary to cause the spark, and greatly improves ignitability.
7.Taper-cut Ground Electrode
The tip of the ground electrode is cut to a fine taper to reduce the adverse effects of quenching, which greatly improves fuel ignitability. Also, because of the streamlined, taper-cut shape, the fuel-air mixture spreads more evenly in the gap, resulting in steady, reliable igniting of combustion.(excluding IUF27A, IUF31A, IU24A, IU27A, IU31A, IY24, IY27 & IY31)
8.U-Groove Ground Electrode
The U-shaped groove on the ground electrode insures that the inside surface area is large enough to generate the flame kernel. This shape enables lower voltage needed to cause the spark and results in excellent ignitability without increasing the size of the spark gap. (excluding IUF27A, IUF31A, IU24A and IU31A)
9.Insulator Projection
The projection of the insulator is optimally designed based on each plug's thermal value. This corresponds to requirements unique to thermal value, such as self-cleaning ability at lower thermal values, and heat resistance at higher thermal values. (For all plug types)
Ignitability That’s a Cut Above
With U-Groove ground electrode for better spark performance.
To increase ignitability, the important point is to let the flamekernel caused by the spark to grow to a large size. Normally, this can be accomplishing by widening the spark gap, however this causes spark voltage to increase, which has the opposite effect. IRIDIUM POWER U-Groove ground electrode to realize a superb ignitability while maintaining spark voltage at low levels.
Improved Horse Power (1)
Get more power with an optimal fuel cycle.
IRIDIUM POWER has a low required voltage and a high ignitability, resulting in less misfiring and no spark, the outcomebeing a dramatic improvement in combustion. Engine output is thus increased. The findings of a bench test using a motocycle engine to show the improved combustion from
IRIDIUM POWER is shown on the below. Compared to normal plugs, a 0.5ps (1.4%) improvement is seen in output at 110 km/h.
Improved Acceleration
Increased response and acceleration performance.
IRIDIUM POWER best demonstrates its performance improvement during acceleration.
IRIDIUM POWER has a 0.4 mm diameter iridium center electrode and a specially shaped ground electrode. These features combine to achieve higher ignitability and require lower spark voltage than ever before. This enables high-response driving with fewer misfies than under higher required voltage spark conditions, and fewer misfies when ignitability is difficult. As a result, acceleration improves in comparison with normal plugs.
Improved Horse Power (2)
The 0.4mm center electrode increases output under various driving conditions.
The power produced by the 0.4mm dia. iridium center electrode is IRIDIUM POWER unmatched by other plugs. The graph below compares the resulting power when IRIDIUM POWER is installed compared to other high performance plugs. Using a 0.4mm dia. fine center electode, there is more power compared to 0.8mm and 2.5 mm dia. plugs. This is what makes the difference in acceleration and in your lap time.
Improved Fuel Mileage
Even during idling ignition is assured, with less fuel consumption.
The good ignitability from the fine electode (0.4 mm) of IRIDIUM POWER draws out much more performance from the engine. Comparing a normal plug (W20FS-U) with an IRIDIUM POWER (IWF22) on a 2-cycle 50cc engine, fuel consumption improved from 41.74 km/L → 43.69 km/L, an improvement of about 5%.
Note: Mileage measured using a chassis dynamo; actual driving results under normal conditions may vary.
Compatible with OEM applications:
NGK DF7H-11B (1317);
NGK DILKAR7B11 (1406);
NGK DILKAR7B8 (92217);
NGK DILKAR7H11GS (96964);
NGK DILKAR7M8 (90288);
NGK DILZKAR7B11 (90935);
NGK DILZKAR7C11S (90137);
NGK ILKAR7B11 (4912);
NGK ILKAR7K11S (90255);
NGK ILKAR7L11 (94124);
NGK ILZKAR7B11 (1654);
NGK ILZKAR7E11S (96509);
NGK LKAR7AGP-D (93220);
NGK LKAR7BGP (94297);
NGK LKAR7BGP-S (92649);
NGK LKAR7BIX-11S (93501);
NGK LKAR7C-9 (96707);
NGK LKAR7A (6799);
NGK SILZKAR7B11 (93482); and
Denso IXEH20, IXEH20TT.
SPECIFICATIONS
Torque Specs: Cast Iron: 11-18 lb. ft. Aluminum: 11-18 lb. ft.
Heat Range: 20
Longevity: 150,000km
Resistor: Yes
Shell
Thread Size: 12mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Resistor Value: 5K Ohm
Reach: 26.5mm (1.04")
Hex Size: 9/16" (14mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .039" (1.0mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.4mm
Projection: Extended Projection
Ground Electrode
Material: Platinum
Type: Fine Wire
Shape: Pin
Quantity: 1
Package Content:
4pcs Iridium spark plug IXEH20TT
Check compatibility with your vehicle - SELECT ENGINE VERSION - The most important thing is the version of your engine to see if it applies to your vehicle.
Use the Ebay compatibility table. Insert Year, Make, Model, Trim and Engine for double verification before making the purchase. That will reduce the purchase of a wrong product. (You can send your AUTO VIN NUMBER for a safe verification) Contact US. FREE.