DENSO is one of the world's leading manufacturers of automotive components and systems and has pioneered many exciting new products. DENSO were the first company to introduce long-life Iridium spark plugs to the market in 1997.
Following the success of these ultra-durable Iridium plugs, DENSO developed the IRIDIUM SAVER range - a high-efficiency longer-life spark plug for gas engines that combines the performance benefits of Iridium technology with a number of environmental benefits. DENSO's OEM expertise and commitment to innovation enables us to remain at the front of cutting-edge gas engine spark plug development.
The unique and specialist technology used in DENSO spark plugs range gives extra durability, making them ideal for high-compression lean-burn engines, while also help to maximise engine performance. Because DENSO spark plugs require minimal maintenance compared to standard plugs, DENSO spark plugs increase service interval times which results in lower maintenance costs.
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IRIDIUM POWER 4 Pack
Auto Spark Plug IK20 Technical Information
Now DENSO has launched 3 range of hard-wearing spark plugs:
1. DENSO IRIDIUM SAVER spark plug.
2. DENSO IRIDIUM SAVER PERFORMER spark plug.
3. DENSO DOUBLE IRIDIUM (DDI) spark plug.
SPARK PLUG INSTALATION AND/OR REPLACEMENT
Presuming that you made correct selection of the spark plugs through the use of our instructions titled 'Spark Plug Selection'; you should also PAY ATTENTION to the gap setting between the electrodes as recommended by the engine manufacture in his technical manual (maintenance schedule or technical data list); you can also use our Catalog.
These data should be compared with the factory set spark plug gap and corrections should be made if necessary.
Make quite sure before you fit plugs that the spark plug seat in the cylinder head is perfectly clean.
Screw the spark plug into its seat by hand until the washer or its seat contacts the cylinder head.
As to avoid damage in the cylinder head we recommend that you use a torque spanner set to the tightening figures given in our table 'Tightening Torque'.
If you tighten spark plugs by spark.plug spanner, then new spark plugs with flat seat (gasket type) should be tightened approx. 90°.
Those with conical seat are tightened approx. 15°, the same applies to used spark plugs with a flat seat and deformed gasket.
You should be very careful when tightening spark plugs with conical seat (without gasket) because of seat vulnerability in the cylinder head.
DENSO IRIDIUM is the Ultimate Long-Life Spark Plug
DENSOs Iridium Long Life plug is fast becoming the standard for todays high-tech engines.The properties of DENSOs patented Iridium alloy have broken through the spark plug technology barrier. Employing a revolutionary new 360 laser welding process, DENSO has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions, DENSOs patented Iridium alloy is six times harder and eight times stronger than conventional platinum and can handle temperatures in excess of 4,000F.
DENSO IRIDIUM TOUGH features :
Denso Iridium Power global performances.
0.4mm diameter Iridium Center electrode.
Platinum chip on ground electrode.
Last 100 000km (5 times the classic spark plugs on normal use).
Less fuel consumption (Up to 5%).
Better acceleration / More stability from ignition.
More reaction from the engine.
Cleaner combustion / Less unburned fuel.
Horsepower slightly increased.