NGK gives them a life expectancy of 40-50k miles. But they have to temper their projections as driving conditions and motor modifications differ. Typically we have found you can expect 60,000 to 80,000 miles on an unaltered motor. NGK Laser Iridium Spark Plugs have iridium center and a platinum ground electrodes.

Scientists have long known lasers could do a better job, because lasers can do a better job at most everything: They can be more precisely controlled in timing and ignition levels and they don’t suffer from wear due to electrical arc “pitting” like traditional spark plugs do.

These laser spark plugs are known as being very robust and thus withstand the high vibrations and temperatures in a combustion engine. What’s more, this type is also relatively cost-effective. It transmits light pulses that succeed each other in extremely short intervals of 60 to 250 microseconds.

These two plugs perform similarly, due to their fine-wire tip design, but the service interval is different; the Laser Series are typically designed to last 80 to 100 thousand miles, where as the Iridium IX® spark plugs are designed to last 40 to 50 thousand miles.

Advantages of using laser ignition system: The lifetime of laser ignitor is much more as compared to the conventional ignition system. Laser ignition system can burn leaner mixture more efficiently. Precise timing is possible in laser ignition system. Reduced fuel consumption rate.

Laser Ignition technology is capable of igniting leaner fuel-air mixture, which cannot be successfully ignited by conventional spark plugs.

NGK 6619 Iridium IX Spark Plugs snagged the top pick in our spark plug comparison because they offered the best mix of high-performance, fuel efficiency, durability, and dependability. Featuring an iridium construction, these high-quality spark plugs provide a longer lifespan than copper and platinum spark plugs.

Laser ignition is an alternative method for igniting mixtures of fuel and oxidiser. The method is based on laser ignition devices that produce short but powerful flashes regardless of the pressure in the combustion chamber.

Spark plugs can ignite leaner fuel mixtures, but only by increasing spark energy. Unfortunately, these high voltages erode spark plug electrodes so fast, the solution is not economical. By contrast, lasers, which ignite the air-fuel mixture with concentrated optical energy, have no electrodes and are not affected.

Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.

Infrared light from a neodymium-YAG laser is fired into the tube, which carries it round bends and into the engine cylinders where a lens focuses all the energy onto a fine spot. This triggers the electrical breakdown of gas inside the cylinder and generates a plasma spark that ignites the fuel.

Researchers from Japan’s National Institutes of Natural Sciences (NINS) are creating laser igniters that could one day replace spark plugs in automobile engines. Not only would these lasers allow for better performance and fuel economy, but cars using them would also create less harmful emissions.

NGK Laser Iridium Spark Plug IZFR6K11 6994 (Pack of 4) Element Crv Accord Mdx Rl Tl Tsx Rsx Reach 19mm Hex Size 16mm Gap 1.1mm Resistor Value 5K Ohm. $36.94. Bosch 9614 Double Iridium OE Replacement Spark Plug Up to 4X Longer Life (1 Pk) CSX, Acura: MDX, RL, RSX, TL, TSX, Accord, Civic, CR-V, Element, Honda Fit.

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