Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
1-877-887-1105
Every day 8:30AM EST - 11:00PM EST
Win 1 of 3 Exhaust Kits! Enter Daily!

Autolite HT0 Spark Plug (05-08 GT)

Autolite HT0 Spark Plug (05-08 GT)
32 Reviews 5 Answers
Market Price $99.99 You Save 10% ($10.00)
Starting At

$89.99 (set)

FREE Shipping

  • Item 64201

  • MPN#HT0

    more

Local Install Shops

Quoted installation from $125

View 3 Shops

near 19355 (change)

Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

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.

    Features & 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 Photo (1) Customer Reviews (32) Questions (5) & Answers (5)
    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

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

    You Might Also Like

    Customer Photos (1) Submit Your Photo

    View 1 Photo

    Questions & Answers (5)

    5 Top Rated Questions

    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)

    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!

    • Hi, These plugs are 1 degree colder than your stock plugs and can still be used for your daily driver and on the track.

    Helpful (0)

    Are these 2 piece like OEM for the 3V head or are they one piece plugs?

    • The Autolite HT0 Spark Plug (05-08 GT) are one piece spark plugs.

    Helpful (0)

    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.

    • The Autolite HT0 Spark Plug (05-08 GT) would do more harm than good if you didn't have the proper power (i.e. a boosted application of some sort) in order to support it.

    Helpful (0)

    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?

    • These plugs are a different heat range than the stock plugs and for a naturally aspirated engine (no boost), you should get the Autolite HT1s.

    Helpful (0)
    Post Your Question

    People Who Bought This Item Also Bought

    Customer Reviews (32) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:0-$100

    • Performance Gain 4.291667 4.3
    • Fit 4.958333 5.0



    • 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 (0)

    • 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 (2)

    • 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 (2)

    • 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 (2)

    • 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 (3)

    • 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 (3)

    • 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 (3)

    • 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 (3)

    • 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 (7)

    • 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 (5)

    • 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 (4)

    • 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 (4)

    • 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 (4)

    • 5/5

      Installation Time: Afternoon

      June 14, 2017

      great plugs

      These plugs worked well for me on my 06 mustang. I've read they are much better on a forced induction application so I will be trying a hotter plug next time around. Still worked great over my 100k mile stock plugs.

      DerekC

      Year: 2006 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Less than 1 Hour

      February 21, 2017

      2005 SC SALEEN

      I used there plugs on my 2005 SC SALEEN. Runs better then the old ones. Can't complain besides the .45 pre gap

      05SALEEN

      Year: 2005 Submodel: Other

      Helpful (5)

    • 5/5

      October 06, 2016

      hto plugs

      appear to be great plugs, can notice a slight improvement in performance. they are supposed to be 1 piece body so they wont separate like originals.

      mabuck

      Year: 2006 Submodel: GT

      Helpful (5)

    • 5/5

      September 12, 2016

      Very good to run with a 150 nitrous shot

      I bought them to run with a 150shot them do the job pretty well ,thx to americanmuscle they arrive to my home pretty fast

      Jose

      Year: 2005 Submodel: GT

      Helpful (5)

    • 5/5

      August 25, 2016

      great plugs

      I have not used these before. I have a o6 Roush and this was what was it. Seems to make it just a little stronger.

      John1

      Year: 2006 Submodel: Other

      Helpful (5)

    • 5/5

      August 08, 2016

      Spark Plugs for mustangs !

      These plugs made my car real snappy! I do recommend replacing the coils to if your thinking of more power especially if you have a super charger in the way LOL !

      Yonald

      Year: 2007 Submodel: Other

      Helpful (5)

    • 5/5

      August 04, 2016

      They work beats!

      They work beast on my06 gt never go wrong with them haven't tried then on the bottle but more than sure it's gonna work beast.

      Gordoo

      Year: 2006 Submodel: GT

      Helpful (5)

    Related Mustang Categories