Ford Focus Mk2 RS and ST225 Denso Iridium Spark Plugs IKH20TT X 5 Plugs

5 X Denso Iridium Spark Plugs IKH20TT

These are the equivalent heat range of the standard Ford or Bosch Iridium RS plugs. We have been struggling to get the Bosch plugs so have got these Japanese Densos instead.

DENSO has started to sell IRIDIUM TT spark plugs having a φ0.4 mm iridium alloy center electrode and a 0.7 mm needle-type platinum alloy ground electrode.

The quenching effect has been decreased by forming the electrode into a double needle shape. As a result, the flame kernel rapidly develops and the engine’s power is drawn out to its maximum potential.

❶ Built-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.

❷ 360° 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.

❸ φ0.7mm 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.

❹ φ0.4mm 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.

Use IKH20TT in standard or lightly modified cars IKH22 in modified cars and IKH24 in cars that are heavly modified or used on track. Price is for a set of 5 plugs .

Pregapped TO 1mm. These are gapped differently to normal plugs as they have the "double needle" electrodes.

*Please note images are generic and may not show the exact product*