Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter Daily
Win An Eibach Sportline Kit! Enter Daily

HT0 Spark Plug (05-08 GT)

HT0 Spark Plug (05-08 GT)
$0.00
39 Reviews 8 Answers
Market Price $99.99 You Save 10% ($10.00)
Our Price

$89.99 (set)

FREE Shipping

  • Item 64201

Will this fit your Vehicle?

Change Vehicle Help?
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Add to Cart
Save for later
    Create a list
    Add to New List

    Saved - View your saved items

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

    Frequently Bought Together

    Features, Video & Details

    • Perfect for Nitrous and Force Inducted Engines
    • Colder Heat Range
    • Copper Core with Platinum Tip
    • Fits 2005-2008 GT's w/ Black Coil Boots
    • Sold as a Set of 8

    Product Resources

    Customer Photos (2) Customer Reviews (39) Questions (9) & Answers (8)

    Review & Installation Video

    Review & Install Video

    More Power. When you add nitrous, superchargers, or turbos to your Pony you need the correct spark plug to maximize the horsepower benefits available from these modifications. That is where Autolite "HT0" Spark Plugs come into play, these plugs are specifically designed for applications that require one step colder heat range.

    Superior Materials. Autolite Spark Plugs have a thin profile design with a copper core for its superior conductivity and a durable platinum tip to assure a strong spark and a long life to keep your performance Pony running at it's peak power.

    Application. This set of eight (8) Autolite HT0 Spark Plugs are specifically designed as an upgrade for nitrous or force inducted 2005 to 2008 GT Mustangs. These plugs are factory gaped at 0.045 inch.

    Fitment: 2005 2006 2007 2008 Details

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (8) Spark Plugs
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos (2) Submit Your Photo

      View All 2 Photos

        Questions & Answers (9)

        5 Top Rated Questions

        Hey, cools stuff. Im here in Phoenix AZ where its stupid HOT over 105 plus for 4mths, would running these plugs here help in keeping it cool when out playing??? if not what would be the best plug ? NO boost, just cold air intake with better flow exhaust, 2006 GT convertible. thx dan

        • We do not recommend running these for your setup, as you do not have forced induction.

        Helpful (0)

        I have longtubes, cai, tune, can i daily these an have no problems

        Which plugs should I use with MSD blaster coil packs?

        • When upgrading spark plugs, we generally recommend checking with your tuner.

        Helpful (0)

        will these work with aftermarket cam (stage 2) a tune and headers?

        • This would be more ideal for Mustangs that have a supercharger, turbo or nitrous kit. These spark plugs wouldn't be beneficial for the modifications you have on your Mustang currently.

        Helpful (0)

        Will these plugs work well with my 06 gt stock everything?

        • Hello! This set of eight (8) Autolite HT0 Spark Plugs are specifically designed as an upgrade for nitrous or force inducted 2005 to 2008 GT Mustangs. These plugs are factory gaped at 0.045 inch. They would not be a good option or necessarily even work on a stock GT.

        Helpful (0)
        Post Your Question
        4 More Questions
        i see that these plugs are good for nos. but i daily drive my mustang and drag it every now and then so i would like to know if these plugs are good for when i daily my mustang and do not use my nos! 1 answer
        Are these 2 piece like OEM for the 3V head or are they one piece plugs? 1 answer
        Use without NOS or an S/C? I have a few upgrades but I'm not running NOS or a S/C and I would like to put some better plugs in other then the 2 piece OEM plugs will these work fine in my stang or give me more headache then performance? Thanks for the help. 1 answer
        Can i use these spark plugs even though i cant get supercharge yet? Im due for some new sparkplugs, 82,xxx miles. What plugs do u recommend? 1 answer

          Customer Reviews (39) Write a Review

          Overall Rating 4.7

          out of 5 stars

          Installation Time:Less than 1 Hour

          Installation Cost:0-$100

          • Performance Gain 4.322581 4.3
          • Fit 4.967742 5.0



          • 1/5

            Installation Time: Less than 1 Hour

            September 15, 2019

            Bad

            I’ve had for less than a month and already have a misfire on cylinder 4

            LarryL

            Year: 2005 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            April 06, 2019

            Starts

            Got them all off and on within two hours I think, starts every time, I have to change the coils to ensure great start, then the fuel injectors, then the wiring harnesses that connects each terminal to terminal, and then , there’s much to to

            LoveMyGT

            Year: 2007 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            April 02, 2019

            HTO Spark Plugs

            These are recommend for my supercharged Roush Mustang and have had used them previously and they performed excellent. I'm currently upgrading my coil packs so I am replacing with again the HTO spark plugs so everything is new for my ignition systems.

            EdwardG

            Year: 2005 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            February 13, 2019

            Aksel

            Great plugs, the original HT0 had 50,000 miles on them, still good but decided to change them since I was working on the car. Forced induction (supercharger), gapped the plugs at .030.... Soaked down the old plugs with Nut Buster for 24 hours prior to removing and none broke off...

            GARRYH

            Year: 2006 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            December 28, 2018

            Great choice

            Perfect fitment. Running 100 better now! Very satisfied with these plugs.

            SBarros92

            Year: 2006 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Less than 1 Hour

            December 19, 2018

            HTO plugs

            I received the spark plugs quickly and they were exactly as descibed

            DanL

            Year: 2006 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Less than 1 Hour

            November 29, 2018

            Great product

            Car was puttering all over the place with old stock plugs , put these bad boys in and she runs like a brand new car . Also feel a little more throttle .

            JamarisS

            Year: 2006 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Afternoon

            August 26, 2018

            Worked great, eliminated detonation!

            Replaced factory plugs with these, had minor detonation even w/93 octane ... all stock. Replaced plugs, runs great, cut detonation down to almost nothing. Perfect! PB Blast the old plugs for a few hours, the get a good fitting 9/16 socket on cold motor, by hand, go slow ... no broken plugs.

            07GTAF

            Year: 2007 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            June 27, 2018

            Edelbrock Stage 1 Mod Package

            My mechanic said to buy these. I did and my 2008 Bullitt runs better than ever. Great fun to drive.

            Albert

            Year: 2008 Submodel: Bullitt

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            June 15, 2018

            Autolite HTO Spark Plugs

            The same plug that was used in my car when i had the stage 3 Saleen up grade done from Brenspeed. Perfect plug for supercharged vehichles

            Tracy

            Year: 2008 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            June 07, 2018

            Great

            Went to local store for same plugs, about 3-4$ more per plug as well as being out of state. Got these guys great price and a day early. Easy install as well. So far they are performing great with the turbo.

            blackstang

            Year: 2007 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            May 06, 2018

            Great spark plug

            Was able to get all the old ones out without breaking any.

            DeanW

            Year: 2006 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            April 22, 2018

            Great spark plugs

            They do as advertised and arrived 1 day before they were scheduled!

            Drewpeacock

            Year: 2006 Submodel: GT

            Helpful (8)

          • 5/5

            April 08, 2018

            Big difference!!!!

            These Autolite HTO spark plugs really made my 2008 gt come alive!!. Before I changed the plugs I couldn't get no boost out of supercharger but now it is a Beast again!!

            stangman

            Year: 2008 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            April 02, 2018

            great spark

            works very good with or with out nitrous would iv all ways used Autolite plugs even in my Dodge

            DannyBarnes

            Year: 2006 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            February 13, 2018

            They Work Well

            These plugs were affordable. working well in my 06 mustang GT that I added a Roushcharger. its been a year and 10k miles with no misfires nor issues. You do not gain any power from a sparkplug change and never change your plugs before 100k miles. factory plugs are platinum.

            bipolarenigma

            Year: 2006 Submodel: GT

            Helpful (17)

          • 5/5

            Installation Time: Less than 1 Hour

            February 13, 2018

            Great replacement for oem.

            Easy to replace. Just soak the old spark plugs with PB Blaster overnight and they come out easily.

            SOP

            Year: 2005 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Afternoon

            July 28, 2017

            Excellent

            Shipping was quick and they installed in a breeze. Mustang is running nice and smooth now!

            TrevorA

            Year: 2006 Submodel: GT

            Helpful (9)

          • 5/5

            Installation Time: Less than 1 Hour

            June 16, 2017

            Good Plugs

            Pain getting the old ones out. But the new plugs work great with my supercharger! Noticed a difference.

            SethW

            Year: 2007 Submodel: GT

            Helpful (9)

          • 5/5

            Installation Time: Less than 1 Hour

            June 15, 2017

            Good Sparks

            Good Sparks! An easy upgrade over the stock Sparks, with a noticeable kick.

            theone44

            Year: 2006 Submodel: GT

            Helpful (8)

          Related Mustang Categories