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Denso Iridium TT spark plugs
Suitable for; Toyota MR-S MR2 mk3 1.8L 1999-2007 (Spyder MR-S Roadster).
Supplied as a set of 4 plugs.
* Manufacturer Denso
* Diameter 14mm
* Reach 19mm (3/4")
* Hex Size 16mm (5/8")
* Terminal Type M4 Thread
* Electrode Material Iridium TT
* Projection Type Projected
ABOUT DENSO IRIDIUM TT SPARK PLUGS
Introducing Denso's Iridium TT Spark Plug range with, at 0.4mm, the world's smallest diameter centre electrode, 0.2mm narrower than the closest competitor. Offering superior ignitability and up to three times the service life of a standard nickel spark plug, Iridium TT delivers improved fuel economy and all-round optimum vehicle performance.
➊Built-in, Highly Reliable Resistor
All specification types include an embedded, highly reliable, monolithic resistor to eliminate electoromagnetic noise interference from all kinds of electronic devices.
➋360° Laser Welding
The iridium tip is mounted with an "All-around Laser Welding" method that insures high reliability even under the most severe driving conditions.
➌φ0.7mm Needle-Shaped Platinum Ground Electrode
In order to maximally prevent quenching effect, the ground electrode needs to be made as small as possible. Traditional ground electrodes could not be made too small without reducing groundig strength or increasing electrode wear.
However, we've managed to attach a fine 0.7mm-diameter platinum electrode using a 360° laser welding technique.
➍φ0.4mm Ultra-fine Iridium Center Electrode
Using DENSO's exclusive iridium alloy having a very high melting point, the tip of the center electrode can be shaped very thin and fine, reducing spark voltage requirements and greatly improving ignitability.
Suitable For: mk3