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Denso Iridium ITV22 Spark Plug: Mazdaspeed 2.3L MZR DISI (Set of 4): (HR:7)
Denso Iridium

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Product Code: ITV22


Heat Range: 7 (stock is 6)
.030 - .032
*These plugs are set to factory gap out of the box.*

Denso Iridium Plugs

DENSO's patented iridium alloy is extremely tough and wear-resistant. This makes it possible to produce a spark plug with a centre electrode of just 0.4 mm. Denso Iridium spark plugs give a stronger spark and better ignition performance in all areas of driving. These plugs can withstand even the most severe conditions and have proven themselves in original equipment and racing. This product gives DENSO the leading position in Iridium Spark Plug technology.

Iridium Power Range

These Denso plugs are the obvious choice for any one looking for a fast, easy and effective way of enhancing and improving the performance of your engine. Utilising the revolutionary 0.4mm center electrode technology, the Iridium Power plugs can make an immediate difference to your bhp, fuel efficiency and cold starting.

As used by racing, rally and performance OEMs throughout the world.

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 8 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Happy so far! June 29, 2014
Reviewer: J-Dog from Sydney Australia  
Put these in a mostly stock '06 MS3 (stock plus intake).

Granted my old plugs had 87,500km on them since last change at 100,000km, it was like a different car to drive.  

Increased power, more responsive, and a bit less black smoke (fuel) out the back.

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  7 of 7 people found the following review helpful:
4 of 5 Neato December 25, 2009
Reviewer: Chad Sparks from Glenpool, OK United States  
Put these on last night. Install was easy. Just pull tmic cover off, take out nuts off the tmic and rotate it to the side. Pull coil packs off, then plugs. I gapped mine at .30. Three off them were at that already, one was at .26. I've heard with an AP they need to be at .26 but I don't know. Lots of people say they run best at .30. Make sure you pull the boots off your coil packs and stretch out the spring inside them. Being sure to stretch them out on the ends more than the center. Make it about twice as long as it comes. This will make a big difference, allowing the spring to make contact with the plugs and will eliminate hesitation and overall give much better performance.

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  2 of 2 people found the following review helpful:
4 of 5 ITV22 August 20, 2009
Reviewer: Nick from NJ United States  
great on stock engine, and then later on a seamless install of Cobb Accessport. Only concern is some say Cobb AP requires a .28 gap. Engine noise is greatly reduced, hard to tell when car is off or idling.

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  1 of 1 people found the following review helpful:
5 of 5 Major improvement June 3, 2009
Reviewer: Jeff from Saint Louis,†MO†United States  
More power, faster acceleration, less engine noise and easy install.  These one step colder plugs will improve preformance especially in hot weather when IATs are very high.  You don't need to change the gap with these... just install and go.

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  0 of 0 people found the following review helpful:
5 of 5 Denso itv22 May 30, 2009
Reviewer: Boyer from Allentown,†PA†United States  
Installed along with Cobb Accessport. had to pop off the intercooler but have had zero issues with Accessport maps. definitely a must - buy the next time your plugs need to be replaced. We at my house next day as well...

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