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Ford Performance 0-Degree Spark Plugs (05-08 GT)

24 Reviews
Our Price

$94.99

(set of 8)
  • Item #50239
  • MPN# M-12405-3V0

  • Market Price $108.09
  • You Save 12% ($13.10)
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Customer Photos
Features
  • Perfect for Nitrous and Force Inducted Engines
  • Colder Heat Range
  • 16mm Thread Pattern
  • Fits 2005-2008 GT's
  • Sold as a Set of 8
Description
More Power. When adding power adders like nitrous, superchargers, or turbos to your Pony you need the correct spark plug to maximize horsepower. That is where Ford Racing "0-Degree" Spark Plugs come into play, these plugs are specifically designed for applications that require a one step colder heat range.

Legendary Ford Racing Performance. Add performance parts to your Pony made by the people who know it best. Ford Racing's legendary quality and performance ensure these 0-Degree Spark Plugs will deliver the consistent results you need to tune for maximum power.

Application. This set of eight (8) Ford Racing 0-Degree 16mm Spark Plugs are specifically designed as an upgrade for nitrous or force inducted 2005 to 2008 GT Mustangs with the stock 3 valve 4.6L modular engine.

Identifing Your Coils. Engines with late style 12MM spark plugs can be identified by coil engineering number

8L3E printed on the coils. Engines with early style 16mm "High Thread" design spark plugs can be identified by coil engineering number

3L3E.

Fitment: 2005 2006 2007 2008 Details

What's in the Box
  • (8) Spark Plugs
Installation Info
Will it fit my Mustang?
  • Bullitt - 08
  • GT - 05, 06, 07, 08

Intended for use with nitrous, turbo, or supercharged applications

Most Helpful Reviews

5/5
Great plugs

Just got these when I upgraded to a Vortech. Plugs went in smoothly and am having no problems.

Helpful (1)

5/5
Great upgrade!

Install was easy and I am not a mechanic by any means. I got the spark plugs in timely manner. These plugs made a big difference with my Twin screw supercharger. Car runs a lot better. Thanks American ...

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Helpful (1)

Overall Rating 4.8 out of 5 stars
Read All 24 Reviews

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4 Questions / 5 Answers

Ask a Question

Ok to run on n/a cars? Although these plugs are designed for forced induction are they ok to run on n/a cars as well?

OutlawGT

  • These plugs are a colder plug meant for higher cylinder pressures. While it might run in your N/A engine, there is a possibility of missing under throttle or they simply might not make optimal horsepower.

    Jeff33702

    Good Answer (4) (0)

Show 2 more answers Question Resolved

What's the gap set at? I mean right out of the box, what gap are these? Same as stock plugs?

moosestang06

  • .045. Supercharged applications like .032 to .035.

    SoCalGT

    Good Answer (1) (0)

Answer This Question I need this answered (0) (0)

Are they helpful if I only have a stock engine? I'm planning on putting some basic mods in my 05 GT, but no Nos, turbo, or supercharge any time soon, so would they still work good with a stock engine?

Gilbert09

  • No they are a colder plug designed for forced induction applications. American Muscle has other plugs that are up grades from stock that are designed for your application. Like the NGK G-Power Platinum Performance Spark Plugs item #64066.

    fasteddie64

    Good Answer (1) (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (24) Write a Review

Overall Rating 4.8

out of 5 stars




  • 5/5

    Installation Time: Afternoon

    May 01, 2014

    Great upgrade!

    Install was easy and I am not a mechanic by any means. I got the spark plugs in timely manner. These plugs made a big difference with my Twin screw supercharger. Car runs a lot better. Thanks American Muscle!

    2006SC

    Year: 2006 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Arizona

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 26, 2012

    Great plugs

    Just got these when I upgraded to a Vortech. Plugs went in smoothly and am having no problems.

    Taxman72

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 North Texas

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 08, 2012

    Ford Racing Spark Plugs

    Purchased these Ford Racing 0-Degree Spark Plugs for installation along with a Vortech Supercharger kit on my 2006 Mustang GT and they fulfilled all of my expectations. Great parts at a great price!!

    Raceneck2000

    Year: 2006 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Wichita, KS, USA

    Helpful (2) (0)

  • 5/5

    Installation Time: Weekend

    June 07, 2015

    Good plugs for nitrous

    The old plugs are a pain to get out but once there out these plugs go right in and work great

    BHiggins5

    Year: 2007 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Rochester NY

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    March 23, 2012

    Great plug

    Just got done installing these in my 08 mustang it was made in 9/07 and was still affected by the infamous ford plugs breaking the cutoff date for the 2 piece plug is after11/07 . I did everything I was supposed to from loosing 1/8 of turn and then spraying with pb blaster let soak for one hour then removed and my luck no broken plugs! I spray a 125 shot on them and they love it so far. Loaded with nickel anti seize an so it wouldnt happen again. Would like to say thanks to AM for plug reccomendation.

    Jbouton

    Year: 2008 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Savannah ga

    Helpful (2) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    April 01, 2013

    a must have for a supercharged motor

    I replaced the OEM spark plugs in my '07 Mustang GT/CS with the Ford Racing HTO plugs mainly because I recently installed a KB Stage 1 supercharger. A cooler plug is recommended with the addition of a supercharger. Replacing the plugs was easy for me because I had recently replaced my original OEMs with new OEMs just for maintenance purposes. It's hard to say whether or not there has been a performance gain, but I installed the HTOs on recommendation from the tech who installed the supercharger.

    rickinvegas

    Year: 2007 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Las Vegas, NV, USA

    Helpful (1) (1)

  • 5/5

    Installation Time: Afternoon

    June 01, 2015

    Great Plug for Supercharged Applications

    Great plug for supercharged applications - just be sure when removing your old plugs on the 2005 - late 2007 (11/07 for the 2008 model year) builds with the old head design to TAKE YOUR TIME. I fortunately got all eight out without one breaking, but I made an afternoon of it. Also, the gap is preset at .045, so you will have to regap - which can require a special tool. Next time, I'm going with the Brisk plugs with the traditional electrode to see how they work.

    SoCalGT

    Year: 2008 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 2 Los Angeles

    Helpful (0) (1)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    December 17, 2012

    Excellent Spark Plugs, But still the 2 Piece design

    Only reason I gave this a 4 instead of a 5 is that it is designed from the janky 2 piece design that has had the common issue of breaking off in the block when you go past the 50K marker. Still good spark plugs but I HIGHLY recommend not pushing these past 50K miles. I replaced my stock plugs at 64K miles and the shop had to do a spark plug extraction on cylinder 3, so the shop bill ended up being $256 for the spark plug change. Major corrosion on all 8 Stock plugs at 64K MIles when I use Techron Fuel injection cleaner once a month and 91 Premium Chevron gas is the only thing that goes into a my tank.

    NickSMontano

    Year: 2006 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Tucson,AZ

    Helpful (1) (2)

  • 5/5

    Installation Time: Afternoon

    August 25, 2012

    FRRP For the win!

    Took my time removing the OEM plugs (100k miles one them) and didnt have one break! The FRRP slipped right in, came in their own nice little box, and the car seems to run alot smoother now!

    Jason747

    Year: 2006 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Palmdale, CA, USA

    Helpful (0) (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    November 14, 2012

    Rush Order Received

    I ordered these for my Kenne Bell 2006 Mustang GT. My car only has 13,000 miles on it and previously had new Brisk plugs, but sat in storage for 2 years and were so badly fouled when I received my car, that it wouldn't even start. The favorable reviews helped me decide on the Ford Racing plugs. I requested 1-day shipping and received them the very next day. I can't say whether they added any horsepower, but when I added a 130mm Kenne Bell throttle body and tune last week to my car, I can say that I gained 15rwhp and 40rwtq using a Dynojet dyno while air/fuel ratio's remained solid and steady throughout the rpm range. I'm certain the Ford Racing plugs were a contributing factor to these amazing numbers and consistency after three pulls. BTW. my GT dyno numbers were almost exactly what the factory 2012 GT500 numbers are. Would definitely recommend these to anyone using forced induction. Special thanks to AM for their prompt delivery and excellent service.

    VistaBlueGT

    Year: 2006 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Virginia, USA

    Helpful (1) (3)

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