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Steeda Underdrive Pulleys (05-10 GT)

Market Price $279.99 You Save 11% ($30.04)
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$249.95

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  • Item 16110
  • MPN# 701-0005-A

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    Features & Details

    • Gain Up to 10HP
    • Improves Fuel Economy
    • SFI Certified
    • Industry Leading Design
    • Fits 05-10 Mustang GT
    Gain 10HP. You might not know it, but your belt-driven accessories steal up to 10HP. Put those ponies back under your right foot with Steeda's underdrive pulleys.

    Innovative Design. Unlike any other underdrive pulley, Steeda used their unique partnership with Ford to create an innovative design that provides proper torsional vibration dampening characteristics for your 4.6L engine. And unlike other manufacturers that use a less expensive "piggyback" design, Steeda's one piece pulley is designed for maximum efficiency, durability, and power.

    Premium Quality. Steeda creates this premium quality part using nodular iron and injection molded rubber for unsurpassed performance and heat resistance.

    SFI Certified. Steeda was the first to achieve SFI approval on their underdrive pulleys for all 4.6L engines. By choosing an SFI Certified product, you're ensuring the product you choose has been made to the highest standards for quality and safety.

    Fitment. For use on any 05-10 Mustang GT with Stock size belt.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    What's in the Box
    • (1) Crank Pulley
    • (1) Water Pump Pulley
    Installation Info
    Tech Specs
    UnderDrive Pulley Specifications
    Year/Model: 2005-2010 GT Manufacturer: Steeda
    Material: Steel Finish: Black
    Crank Pulley: One Piece Crank SFI Certified: Yes
    Will it fit my Mustang?
    • Bullitt - 08, 09
    • GT - 05, 06, 07, 08, 09, 10

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    Customer Photos (12) Submit Your Photo

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    11 Questions / 6 Answers

    Ask a Question

    was curious if these UDP's will work for a 08 v6? was wanting to put them on and was also wondering if there would be any room for the crank sensor?

    ChanceC

    • The Steeda Underdrive Pulleys will not work with a V6 model.

      AshleyK

    Helpful (0)

    Helo I lost the two bolts that come with those pullies Can I use the stock bolts for installation or do u have replacement bolts I can buy

    M7mdA

    • Unfortunately we do not sell Steeda Underdrive Pulleys bolts to replace the lost ones. It is recommended that you use new bolts however,you can use the stock bolts as well.

      AM MikeW

    Helpful (0)

    I bought his but still didn't install it What belt should I get to install along with it for best performance do you sell it too

    M7mdA

    • The Steeda Underdrive Pulleys, would use the stock length belt.

      JaHarrisAM

    Helpful (0)

    Why does horse power very from manufactures? Steeda says up 10 HP and another manufacture say that there product will deliver up to 15 horse power. Is there a real difference?

    Anthony

    • Hello! Each company has small differences in what their product may be made out of, or what it will weigh, however true power numbers shouldn't vary greatly. An extra 5 horsepower may definitely be possible.

      Doug P

    Helpful (0)

    am planning 2 buy Steeda CAI, am confused between those Roush's, would it be any advantage having Steeda Pulleys instead of Roush ?

    saad

    • The Steeda and the Roush underdrive pulleys will give you the similar performance gains. Both will give you anywhere between 8-10 HP gains and will improve your fuel efficiency. Roush however will have a powdercoated finish and the Steeda will be a polished finish.

      KevinD92

    Helpful (0)

    I just bought a 2007 GT so I'm new to the 3v. I'm just wondering, why do none of the 3v underdrive kits have an alternator pulley, but 2v and 4v 4.6L have it?

    Sn8kebitten

    • The 3v alternator pulley is already the correct size for the under drive pulley kit, so they don't need to sell you a new one. the older 4.6 2v/4v used an upgraded alternator pulley for their kit

      MachRMan

    Helpful (0)

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    Customer Reviews (82) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Performance Gain 4.304348 4.3
    • Fit 5 5



    • 5/5

      Installation Time: Full Day

      February 21, 2018

      Steeda Underdrive Pullies

      I installed these Steeda Underdrive Pulleys myself and I must say it was not as easy as some make it out to be. However, the pieces seem to be of a high-quality build and I actually did feel a slight increase in acceleration. Overall I feel this product was worth it for the money, it looks nice under the hood and it does its job well. I also did not notice any loss of A/C or Power steering function.

      Metallica03

      Year: 2008 Submodel: Bullitt

      Helpful (0)

    • 5/5

      January 02, 2018

      Performance Boost!

      I wasn't sure if this small mode would be noticeable, but it really made a difference!

      Jimmy

      Year: 2007 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      December 07, 2017

      awesome product as always!

      supper easy to install! no issues! works great on my 2010 GT!

      TrenadyH

      Year: 2010 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      November 16, 2017

      u.d. pulleys

      enjoyed putting these on with my dad, easy job and took about 2 hours, can tell the difference when using accessories and gas mileage went up!

      Branden

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      November 06, 2017

      Steeda for the win!!!

      I purshased these in hopes to fix a sound coming from my pulleys. Turned out it was the idler pulley, but with these I have a much smoother launch. You can notice a difference in low end power, and they look very sharp.

      Flawlessfoose

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      September 21, 2017

      Great mod

      Worked very well for me no issues felt the get up and go

      JamesB

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      August 07, 2017

      2010 GT

      Fast install went smoothly. No problems ran into at all. Highly recommended..thanks again AM!

      JacobB

      Year: 2010 Submodel: GT

      Helpful (0)

    • 4/5

      Installation Time: Afternoon

      May 01, 2017

      So far so good

      Installation is a 2 person job if you have an automatic. Took about 1.5 hrs from start to finish. You will need to get the coolant and power steering reservoirs out of the way, as well as remove the electric fan on your 05-09 Mustang GT in order to get in with an impact on your harmonic balancer. Overall - fairly easy to do .. Performance gains were not noticable or slight at best.

      JeffreyG

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      April 22, 2017

      Good 1st Mod For A Taste

      Great first mod. Get in the garage and spend some time under the hood if you forgot what it is about. Overall not going to blow your mind but you will notice a difference in acceleration in lower gears and response. The feel is improved. The fit and quality are good. To repeat what others have already said Don't attempt without an impact wrench. Purchase the new bolt on your way home before the install. Swing by auto parts store and rent the Chrysler harmonic balancer puller. Easy enough with the right tools.

      AlexG

      Year: 2008 Submodel: Bullitt

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      March 04, 2017

      Pulleys

      Work like a charm...fit like factory...must hold torque converter if u don't have an impact wrench

      Martymar

      Year: 2010 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      February 16, 2017

      Steeds underdrive pulleys

      I previously had the SR underdeive pulleys installed and these steeda pulleys blow them out of the water. Spending the extra money is worth it! I immediately noticed a gain in HP and how free the engine was starting off the line. Excellent product and got here sooner than expected! Great job american muscle, I'll definitely be another buyer from here! The install was easy and the instructions were to a T, just take your time with them.

      HaroldK

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      August 29, 2016

      Improved throttle response

      Definitely revs up a bit faster after the install. Installation is simple enough if you have the right tools -- getting the crank bolt out was quite difficult ('06, Manual). I'd recommend renting a powerful impact gun to get it out. Once the crank bolt was out, the rest of the install was a breeze. Use a chrysler harmonic balancer remover, which you can rent from Autozone (3 jaws, comes with rods to push against the crank).

      Hs

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      June 09, 2016

      2006 Mustang GT Steeda Underdrive Pulleys

      These pullies are top notch quality. After the install I the biggest change I noticed was how much smoother the engine ran. I did notice an power gain, how much I'm not certain but it's there, fuel milage as also increased. I haven't experienced any cooling issues even with the air on. This is an excellent bolt on and I highly recommend them. If you're after a simple mod. This is it. For the expert enthusiasts expect to spend about an hour for the install.

      Turbo2

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Full Day

      June 05, 2016

      Fantastic pulleys

      Instructions for install were good and there were no surprises. Pulleys work as advertised, I can tell the difference when rpms come up quicker especially with Ac on. Very well built pulleys. Great mod. To add to your stand.

      Jf721

      Year: 2009 Submodel: GT

      Helpful (0)

    • 4/5

      Installation Time: Afternoon

      March 31, 2016

      excellent replacement

      This replacement was fairly simple. I removed the radiator fan and radiator and had plenty of room to work. The oem belt fit fine as the smaller damper makes up the difference in length. I used an impact gun to install it. You will need a pulley puller for a Chrysler vehicle to remove the old damper pulley. Use Rtv in the key hole and order a new bolt as well. Overall great product and I've noticed a smoother engine function since install.

      roushstage2

      Year: 2006 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      February 22, 2016

      Steeda Underdrive Pulleys

      Throttle Response Acceleration MPG gain Those are the first three things I can absolutely attest to with these. Anyone with an 05-09 knows of the little MPG guage. With full bolt ons and 4.10s I could barely scratch 5 bars. Or 21.3 MPG when calculated. Now it is a full bar improvement in all driving situations. I get six on the highway, and between four and five around town...up from three. I ran a full tank and did the math, no change in driving habits or routes. 23.6 MPG Not astronomical, but for such a simple bolt on, I am quite pleased. Now, throttle response is much better. Barely touching the gas results in fair acceleration in parking lots, or polite take offs. I cannot attest for any actual HP/TQ gains. But when you drive it before and after, you will feel easier acceleration. Not to mention the RPMs raise faster. No change in battery/alternator output. Nor increase in temp. Install was simple. The provided instructions were clear as day. My only caveat with the install. FOR AUTOMATICS. It calls for a 14mm wrench to hold the torque converter. I found a deep well socket and ratchet work flawlessly. Past that, I am thoroughly pleased and would recommend these to anyone staying NA,.a nitrous build, or turbocharger. Even rhose daily drivers, for the gains in MPG amd acceleration alone, it is a fine mod.

      06VetStang

      Year: 2006 Submodel: GT Horizon City, TX

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      July 24, 2014

      Steeda Underdrive Pulleys

      Great product, easy installation. And AM you guys are the best!

      SneakyPeteSawler

      Year: 2005 Submodel: GT Halifax, NS, Canada

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 27, 2014

      I love the look of this product ! The timing markings stand out much better than the competitions products

      Installed just as the instructions stated . I had to take off the electric fan, which I highly recommend because it make the removal easier.

      Cookie8

      Year: 2008 Submodel: Bullitt Baltimore, MD, USA

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      April 22, 2014

      Steeda fan

      I've had these on for a week now and they perform as advertised and expected. There are zero electrical and cooling issues with the factory 500w shaker system and bolt on parts. The freed HP is felt as soon as I hit the gas pedal and beyond. The install was 3 hours which can easily be knocked down to 1 hour now that I've performed one. I had to remove the fan for clearance and required an impact wrench for all bolt removal even with a manual transmission. I used the opportunity to replace the crank bolt and serpentine belt (not supplied/required). The supplied stud replacement bolt was preferred compared to grinding the stud.

      fastlane247

      Year: 2008 Submodel: GT United Kingdom

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      April 08, 2014

      steeda underdrive pullies

      These are the best quality pullies. You will feel more hp if you have more mods with these pullies. They are a great addition. I had a shop install these for $115. They look pretty nice under the hood. These are a nice touch to my stang. :). Well worth the money. Couldn't be happier.

      2005satinsilverbeast

      Year: 2005 Submodel: GT Mi

      Helpful (0)

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