Win A 2018 RTR Spec 3 Mustang Enter Now!
Talk to a Mustang Expert
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

NGK Iridium IX Performance Spark Plugs (93-01 Cobra; 96-04 GT, Mach 1; 98-04 V6)

Market Price $79.99 You Save 13% ($10.00)
Our Price

$69.99 (set of 8)

FREE Shipping
  • Item 64007
  • MPN# 7164

In Stock Ships same business day.
Ship to: ASHBURN - 20146
Please enter a valid Postal Code
We're sorry, zip can't be updated at this time.
Choose options to add to cart
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • Iridium Tip for a Constant Stable Spark
    • Improves Fuel Economy and Lower Emissions
    • Heat Range: 5
    • NGK Part# 7164
    • Sold as a Set of 8
    • Fits 1993-2001 Cobra; 1996-2004 GT, Mach1; 1998-2004 V6 Mustangs

    Review & Installation Video

    Review & Install Video

    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 before, we’re going to do a complete restoration on our 93 GT convertible, and you guys are going to be with us every step of the way. So what are our plans? Well, to say this thing is a little rough, would be the understatement of the century, we need to tackle just about everything there is on this car, I’m talking bodywork, paint, interior, headlights, and what’s left of our top just to name a few. Obviously we’re fans of just about every Mustang under the sun however there are a few that really get us going. One of these is the 93 Mustang Cobra, this was one of the first cars offered by Ford’s SVT division, and really set the tone as far as factory performance tuning is concerned however there was one problem, it was never offered in a convertible so we’re going to actually have a little fun with this build and make something we wish Ford had offered from the factory, we’re going to make our very own Mustang 93 Cobra convertible, which should really turn our tired old Fox into one bad little street machine. Before we get into the fun stuff, we need to take care of some much needed maintenance here on our 93, mainly the worn out and the 100000 plus drive train and body. So that’s the goal with this first step, we’re going to get our GT running like new again, and get the car ready for paint, because…yeah, we got a lot of work to do, so let’s get to it. Alright, 100000 miles of burnouts and hard launces has not been nice to our factory clutch, because it’s absolutely shot, so this is one of those areas where we’re not only going to freshen up, but we’re also going to upgrade, now our upgrade comes in the form of this Exedy Mach 350 stage 1 clutch, and the SR Performance clutch adjuster kit. This kit will replace our old, worn out, gummed up factory cable with this brand new adjustable cable as well as strengthen the weak plastic factory clutch quadrant with this brand new Billet piece. Basically we’re strengthening our overall shifting experience. Besides our beat clutch, our 302 motor is running extremely rough, we’re misfiring all over the place, and the power just isn’t there like it should be, so we’re going to give our motor a serious tuneup. Ryan and I are in the process of installing these iridium plugs as well as a new set of wires as well, on top of that we’re also doing a brand new distributor cap and rotor, and finally a brand new serpentine belt. All these parts should really get our 5.0 firing on all 8 cylinders again. As a little pointer for you whenever you’re doing a tuneup, we recommend using a little anti-seize on all your threads, just because you don’t want a stuck spark plug in your block. In addition, go ahead and throw a little dielectric grease on all your contacts, it’ll just help keep any excess moisture out. Unfortunately our slipping clutch and misfires are only part of the problem, when we were on the way back to the shop we noticed are car was running a little hot so we decided to overhaul our entire cooling system just to be safe. We’re ditching our factory radiator and mechanical fan in favor of this aluminum performance unit from Mishimoto, along with one of their electrical fans. This electrical fan will not only keep things cool, but by ditching that mechanical fan, we’re also going to free up some drag on our accessory belt, which in turn should free up some extra horsepower. To wrap up our entire cooling package we’re going with a brand new thermostat from Mishimoto, along with a new set of hoses from Ford Racing. Of course we have some performance stuff lined up after we get the car back from paint, but in the meantime we have to address this Frankenstein intake we found on the car, we’re going to replace it with this brand new SR Performance cold air intake which, besides giving us a nice little bump in power and sound, will more importantly get rid of this eyesore underneath the hood. Before we get out of the hood completely, we wanted to further reduce the parasitic drag on our accessory belt, so we decided to install this SR Performance smog pump delete kit. Could we run a smaller belt and eliminate the pump completely? Probably, but we wanted to do it right the first time, and clean up the engine bay in the process. Now that we’ve taken care of some necessary maintenance, let’s get to the next big part of the first stage of our resto. The only thing worse than the actual running condition of our GT is the physical condition, I’m not going to lie, this thing is pretty rough in just about every way, but that’s about to change, we’re going to send our GT off for some serious bodywork that includes a brand new paint job, but first, we need to take care of some problem areas. Some of these problem areas include a brand new set of smoked, one piece headlights, a new fender and a rear deck lid panel just to name a few but that’s not all that exciting, this is what’s going to turn our dream build into a reality, we’re going to outfit our 93 GT with a complete Cobra style body kit, along with this Cobra style wing, which when we’re done with our build, should turn our stock 93 vert, into one of the baddest, and possible one of the only, Foxbody convertible Cobras around. Well, that wraps up the first stage of the restoration here on our 93 GT, we took care of some much needed maintenance and got the car ready for the body shop, when we get the car back from paint, we’re really going to start having some fun with the interior and exterior styling, and of course give the car some much needed performance to back up that Cobra appearance, but in the meantime, I’m on my way to paint.

    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

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

    People Who Bought This Item Also Bought

    Most Helpful Reviews

    Oh Yea Baby

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

    Helpful (33)

    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)

    Overall Rating 4.8 out of 5 stars
    Read All 80 Reviews

    Customer Photos (3) Submit Your Photo

    View All 3 Photos

    You Might Also Like

    15 Questions / 5 Answers

    Ask a Question

    i need spark plugs for mustang 2002 v6 3.8 this spark plug is good idea


    • These NGK Iridium IX Performance Spark Plugs will absolutely work on your 2002 V6!


    Helpful (0)

    Which spark plugs are better the NGK, MSD OR EG?


    Would these work well in a 04 mustang Gt with a kenne bell supercharger ?


    • For the best performance we recommend reaching out to your Tuner to pick the correct spark plugs for your boosted application.

      AM MikeW

    Helpful (0)

    Are these plugs pre set or do they have to be adjusted for a 2001 cobra ? Thanks


    • These spark plugs will come pre-gapped however it is always a good idea to check them before install.


    Helpful (0)

    Can these be used as a replacement to a stock engine?


    • Yes, the NGK Iridium IX Performance Spark Plugs could be used as a replacement in a stock engine.


    Helpful (0)

    What are the torque specs? I googled it and see many answers.


    • This will be set to the stock torque specs.


    Helpful (0)

    More Products You Might Like

    Customer Reviews (80) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Performance Gain 4.31579 4.3
    • Fit 4.87931 4.9

    • 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 (33)

    • 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 Submodel: Cobra

      Helpful (21)

    • 5/5

      May 11, 2010


      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.


      Helpful (21)

    • 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


      Helpful (20)

    • 5/5

      March 29, 2010


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


      Year: 2001

      Helpful (14)

    • 5/5

      August 28, 2010


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

      chris norman

      Helpful (12)

    • 5/5

      January 08, 2011




      Year: 2000 Submodel: V6

      Helpful (7)

    • 5/5

      April 17, 2010


      great shipping


      Helpful (7)

    • 5/5

      February 11, 2010


      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


      Helpful (7)

    • 5/5

      January 06, 2010


      Put these on last night along with some new wires. So far so good. I cant tell a huge difference, but there is a difference none the less. Thanks AM!

      Jeremy Madick

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      July 24, 2013

      Excellent Choice Of Plugs

      Put these in my 03 GT which has a bunch of Bolt ons and bama tune car seems to idle much better and run better excellent plugs


      Year: 2003 Submodel: GT Ipswich, MA, USA

      Helpful (4)

    • 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).


      Year: 2000 Submodel: GT Austin, TX, USA

      Helpful (4)

    • 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.


      Year: 2002 Submodel: GT North Salt Lake, UT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      February 15, 2012

      Great Item

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


      Year: 2003 Submodel: GT Los Angeles, CA

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      August 31, 2011

      High quality, perfect.

      These plugs are very high quality. Replaced my ford motorcraft plugs and felt/noticed a small difference. Runs smooth, idles great, accelerates better w/o hesitation. No change in gas milage however. They are made in Japan and make the motorcraft plugs look cheap.


      Year: 1997 Submodel: GT Denver

      Helpful (3)

    • 5/5

      March 11, 2011

      Great Plugs!

      Great product, excellent customer service and super fast shipping - what more could a gear head ask for? Thanks AM!


      Year: 1997 Submodel: Cobra

      Helpful (3)

    • 1/5

      October 16, 2017

      Bad spark plugs

      We ordered the plugs they told us to get. Put them in and about 500 miles later they were burnt up . Put ford motor plugs in and no problem. I think you sold us wrong plugs.


      Year: 2004 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      March 08, 2016

      A Must do for Performance Maintinence!

      Put these in along with the accel coils and on the first drive I noticed a big difference. My gt was running a little sluggish and had some hesitation issues in the later gears, but these and the coils helped tremendously with that issue. Smooth acceleration throughout the RPM range and a little better throttle response. Spend the extra dollars and get the Iridium IX, well worth it in the end.


      Year: 2002 Submodel: GT

      Helpful (2)

    • 5/5

      August 09, 2011

      Wake Up!

      Great plugs, lit a fire in my Mach 1. Got a 4 valve 2 over Stang, get these NGK plugs and wake that Pony up!


      Year: 2004 Submodel: Mach 1

      Helpful (2)

    • 5/5

      September 22, 2016

      Awesome buy

      They fit perfect...would recommend this product. love shopping with AM


      Year: 1998 Submodel: GT

      Helpful (1)

    Related Mustang Categories