NGK Iridium Spark Plugs (4 Spark Plugs)
NGK iridium plugs represent the ultimate evolution of spark plug technology and performance. The iridium center electrode is both stronger and harder than platinum. This allows NGK engineers to design an ultra-fine (0.6mm)center electrode reducing the voltage requirement for spark. This allows for a brighter, stronger spark from your existing ignition system. The ground electrode has a tapered cut at the firing end which reduces quenching for better flame core growth and increased ignitability. The combination of fine wire center electrode and tapered cut ground will increase performance, improve acceleration, and fuel efficiency.
- Iridium IX plug
- .044" gap
- Resistor spark plug
- ISO length
- projected tip
- fine wire (0.6mm) iridium center electrode
- tapered cut ground electrode
- Part Number: BKR7EIX-11-4
- Manufacturer: NGK
Customers Also Bought
15 reviews for NGK Iridium Spark Plugs (4 Spark Plugs)
4.9 out of 5.0
5/29/2015 by Kevin
I haven't noticed any difference from anything else I've used.
5/16/2015 by Based God
Great price, been using these in all my cars for years and never had a problem. Steve at Kseriesparts is the man!!!
1/29/2012 by Mark
I didn't notice my car start up any faster but my gas milage is awesome now :)
11/13/2011 by John L
Replaced the old plugs with these when I purchased my car. Didn't really need them, but replaced anyway. Fit perfectly and car continues to run well 3k miles later. Recommended for the price.
4/25/2011 by Chris
NGK Iridium Spark Plugs (4 Spark Plugs)
Everything one can expect from a spark plug. Car runs smooth and is a good price for the set. Much thanks to ClubRSX!
2/28/2011 by koffeedc5
These are the best priced and in my opinion overall best plugs you can get, I've been using NGK plugs for several years and they are the great
5/23/2010 by Chauncey
NGK Iridium spark plugs $35.00 plugs
Great plugs, car runs as it should. Changed at around 80k miles, car runs great with them. Good plugs w/ no loss of power or anything. Great price as well!
12/12/2009 by k24penguin_pwd
NGK spark plugs
Like always clubrsx shipping is always fast and excellent. If their a problem they call you direct and explain it to you. Didn't have a problem with this item. Basic maintenance was need at the time I bought the plug. The old plugs I had were worn. Put these in and it ran like it usually does.
11/1/2009 by robert kifan
awesome spark plugs
these are really good spark plugs and also a good price for them
10/27/2009 by John Schall
changed plugs at 75000 miles. immediate difference. car idles a lot smoother than with old plugs. throttle response is better as well. great plugs for $35.00.
6/24/2009 by Ryan Zale
It took about 10 minutes to install and I noticed the difference immediately.... car runs great!!!
6/16/2009 by Mark Lawson
Couldn't get a better plug!
I threw a code, went to auto zone to check it out. Apparently I had a misfire in the #2 and #4 cylinders. The BOSCH plugs that I was using: one fouled out and the other looked like it was going to fall apart in my hand. Replaced all four with the NGK iridums and I couldn't have gotten a better plug, period. Better acceleration, a little bit less of a lazy tach, and of course no codes! Everyone should get these or atleast some version of them.
4/10/2009 by Jordan
Great spark plugs!
I replaced them at 70k miles, I'm pretty sure I still had the originals in there because they were completely shot. Instantly gave me an extra 2-3 mpg for each tank...so they'll pay for themselves after a few tanks of gas. Well worth the money!
11/3/2008 by Zeek
worked great on my 05-S with 45k
even though my car is less than half of the recomended tune up time, these plugs a solid difference in performance.
4/19/2008 by James
Awesome spark plugs
Bought 2 sets of these now from clubrsx. 1 set for my turbo setup and another set for my recent NA setup. These are GREAT spark plugs, I would everyone to buy these.