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NGK Iridium Spark Plugs
Part Number: 6988

★★★★★ ★★★★★ 15 Reviews
NGK Iridium Spark Plugs-A1
NGK Iridium Spark Plugs-A2
Images may be for reference only

NGK Iridium Spark Plugs
Part Number: 6988

★★★★★ ★★★★★ 15 Reviews

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Quantity 1 equals 4 spark plugs

1 In Stock

Product Details

Part Number: 6988
Cold Rating: 7
UPC: 87295169889
Brand: NGK

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

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects.

Vehicle Fitment

Acura RSX
2002 Acura RSX Type-S 2003 Acura RSX Type-S 2004 Acura RSX Type-S 2005 Acura RSX Type-S 2006 Acura RSX Type-S
Honda Civic
2006 Honda Civic Si Coupe 2007 Honda Civic Si Coupe 2008 Honda Civic Si Coupe 2009 Honda Civic Si Coupe 2010 Honda Civic Si Coupe 2011 Honda Civic Si Coupe
2007 Honda Civic Si Sedan 2008 Honda Civic Si Sedan 2009 Honda Civic Si Sedan 2010 Honda Civic Si Sedan 2011 Honda Civic Si Sedan
Honda S2000
2000 Honda S2000 All 2001 Honda S2000 All 2002 Honda S2000 All 2003 Honda S2000 All 2004 Honda S2000 All 2005 Honda S2000 All 2006 Honda S2000 All 2007 Honda S2000 All 2008 Honda S2000 All 2009 Honda S2000 All

15 Reviews ★★★★★ ★★★★★

★★★★★ ★★★★★
4.93/5.00 Stars out of 15 Reviews
Write a Review
5 Most Recent Read All 15 Reviews
They spark
Kevin | May 29th, 2015
I haven't noticed any difference from anything else I've used.
Kseriesparts FTW
Based God | May 16th, 2015
Great price, been using these in all my cars for years and never had a problem. Steve at Kseriesparts is the man!!!
Gas Milage
Mark | January 29th, 2012
I didn't notice my car start up any faster but my gas milage is awesome now :)
Good Plugs
John L | November 12th, 2011
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.
NGK Iridium Spark Plugs (4 Spark Plugs)
Chris | April 25th, 2011
Everything one can expect from a spark plug. Car runs smooth and is a good price for the set. Much thanks to ClubRSX!
Read All 15 Reviews