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NGK Iridium IX Performance Spark Plugs (93-01 Cobra; 96-04 GT, Mach1; 98-04 V6)

50 Reviews
Our Price

$69.99

(set of 8)
  • Item #64007
  • MPN# 7164

  • Market Price $79.99
  • You Save 13% ($10.00)
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Product Videos Customer Photos
Features
  • Iridium tip for a constant stable spark
  • Improves fuel economy and lower emissions
  • Heat Range: 5
  • NGK part# 7164
  • Fits 93-01 Cobra, 03-04 Mach 1, 96-04 GT/Bullitt and the 98-04 V6 Mustangs
  • Sold as a set of 8
Description
High Performance. Keeping your Mustangs high performance engine running smoothly and efficiently is important, so routinely replace your old weak plugs with a new set of NGK Iridium IX Performance Spark Plugs for constant reliable spark power. The Iridium IX plugs from NGK will provide improved throttle response, fuel efficiency, lower emissions, and will reduce fouling.

Superior Materials. NGK Iridium IX Performance Spark Plugs feature a copper core electrode for its superior conductivity and an iridium tip (which is 6X harder than platinum) for it's extremely high melting point, perfect for keeping your Mustangs high-performance engine running at it's peak. And as an added bonus the Iridium IX plug features Trivalent Metal Plating for it's superior anti-corrosion and anti-seizing properties.

Application. This set of eight (8) NGK Iridium IX Performance Spark Plugs are specifically designed as a direct fit replacement for the 1993-2001 SVT Cobra, 2003-2004 Mach 1, 1996-2004 GT/Bullitt and the 1998-2004 V6 Mustangs.

Fitment: 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

Won't fit? Add an exception

What's in the Box
  • (8) Spark Plugs
Installation Info
Will it fit my Mustang?
  • Bullitt - 01
  • Foxbody - 93
  • Mach 1 - 03, 04
  • V6 - 98, 99, 00, 01, 02, 03, 04
  • Cobra - 94, 95, 96, 97, 98, 99, 01
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Most Helpful Reviews

5/5
spark plugs

these spark plugs are good for stock or modified mustangs they just wake the muscle up from sleeping so much better than regular plugs a must just for some low end maintanence

Helpful (20)

5/5
Best Plugs!

My '01 Cobra had been having hesitation problems for a few months. Basically, it would seem to stutter at around 1900 rpm's. No one was able to figure out my problem and I was told that I would need a ...

Read More
Helpful (21)

Read All 50 Reviews
Overall Rating 4.8 out of 5 stars

Videos

Well, here it is, our new project car, and as you can see I use the term new very loosely, you Fox body folks have been asking for it, so we’re going to give you a build unlike anything we’ve ever done View Full Transcript

Customer Photos (1) View All Photos

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6 Questions / 8 Answers

Ask a Question

How difficult? Exactly how difficult are these spark plugs to install? I've never changed mine or have even looked at them. Will I be able to do it without any issues? Thank in advance.

WSHCapitals90 Year: 2004 Model: GT

  • They are not hard to install as long as you have the right tools. Some of the things you will need are compressed air or a vacuum to clean around the plugs, a long extension for your ratchet, a spark plug socket with a rubber grommet inside for easy plug removal and a torque wrench for setting your new plugs to the proper tightness. You might have to remove the air intake tube to reach the 2 plugs near the firewall on the passenger side but its not hard at all. Also change your plugs when the engine is cool, not after it has just ran.

    Best Answer

    BigJulieGabagoolie Year: 2002 Model: GT

    Good Answer (10)

Show 3 more answers Question Resolved

Heat Range? It says the heat range is 5..how much colder/hotter is that over stock plugs? I'm looking for slightly cooler plugs to help with slight engine ping.

BlkMustangMegatron Year: 2002 Model: GT

  • http://www.championsparkplugs.com/learning-center/article/225/heat-range-conversion-chart check out this chart. There seems to be no industry standard, only what is set by each manufacturer. 5 from NGK seems to be on the higher side of the scale though

    Hauntedwolf Year: 2005 Model: V6

    Good Answer (3)

Question Resolved

Stock Wires Will these work with stock conductor wires?

Sean135 Year: 2003 Model: GT

  • yes you can. You'll see better gains by matching them with better wires though.

    Best Answer

    Hauntedwolf Year: 2005 Model: V6

    Good Answer (1)

Show 2 more answers Question Resolved

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Customer Reviews (50) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Less than 1 Hour

  • Performance Gain 4.258065 4.3
  • Fit 4.90625 4.9
  • Bang For Your Buck 4.34375 4.3



  • 5/5

    May 25, 2010

    spark plugs

    these spark plugs are good for stock or modified mustangs they just wake the muscle up from sleeping so much better than regular plugs a must just for some low end maintanence

    chris

    Helpful (20) (2)

  • 5/5

    February 04, 2011

    Best Plugs!

    My '01 Cobra had been having hesitation problems for a few months. Basically, it would seem to stutter at around 1900 rpm's. No one was able to figure out my problem and I was told that I would need a valve job. I replaced my plugs with the NGK Iridiums, and along with an oil change and a cleaned MAF and throttle body, the hesitation went away!!! I also noticed an increase in overall average MPG's. I highly recommend these plugs for any mustang!

    Fernando Pena

    Year: 1991 Model: Cobra Driving Style: Daily Driver

    Helpful (21) (3)

  • 5/5

    October 05, 2009

    Oh Yea Baby

    This plugs are awsome, I just put them on my GT Mustang and estan con toda su madre!!!.

    Tu Macho

    Helpful (31) (8)

  • 5/5

    August 28, 2010

    Good

    Better then origional ones, better mpg, smoother ride, better start.

    chris norman

    Driving Style: Daily Driver

    Helpful (12) (1)

  • 5/5

    March 29, 2010

    plugs

    used with gms hot street coils on 01 cobra, it does what its supposed to

    rhett

    Year: 2001

    Helpful (12) (1)

  • 5/5

    May 11, 2010

    Plugs

    Great product! Noticed better throttle response, better idle, and picked up a little better from the hole; didn't hesitate below say 1,800 RPM.

    Gregg

    Helpful (19) (5)

  • 5/5

    February 11, 2010

    plugs

    does what its designed to do, get a good spark every time. not sure if its worth the price but it is a great produt

    Jake

    Helpful (7) (2)

  • 4/5

    Installation Time: Afternoon

    July 06, 2013

    Overall satisfied ...

    The plugs definitely look sturdier. I use to use autolite. Compared to the old autolites that were in the engine, these were definitely a huge improvement. I BELIEVE the spark is more reliable and burns fuel more efficiently. However, that's more of a touchy-feely answer (no metrics - more of a SWAG).

    ALANGTX

    Year: 2000 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Austin, TX, USA

    Helpful (3) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 15, 2012

    Great Item

    Worth the bucks. Does the job. Would definitely recommend it.

    DavidGT

    Year: 2003 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Los Angeles, CA

    Helpful (3) (0)

  • 5/5

    Installation Time: Afternoon

    October 02, 2011

    Good product

    T'was time to replace the original Motorcraft Platinums. Pulled old plugs out - burn color great but wear errosion on the electrodes due to extended use. Installed the Iridium NGKs which restored power to the pony. Not sure if it is specifically the NGKs or just the fact that new sparklers were installed. Engine idles smooth at 600 rpm and pulls strong through entire power band. Note: must remove fuel rails to get proper access to the COPs. After installation, noted fuel leak between fuel rail and top of one injector nozzle. Pulled apart and found damaged o-ring. Replaced o-ring and all was good. Not a difficult job, just take your time and be methodical about what you do. Running NGKs in my boat (SB Chev) which cured problems from original ACs. NGK makes a good plug. Motorcraft still a great product, just decided to opt up to these to see what they would do.

    Rix02

    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 North Salt Lake, UT

    Helpful (3) (0)

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