Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
Every day 8:30AM EST - 11:00PM EST
Win Any Wheel & Tire Package! Enter Daily

Steeda Blower Belt Tensioner (03-04 Cobra)

Market Price $181.95 You Save 13% ($24.00)
Our Price


FREE Shipping

  • Item 16060
  • MPN# 555-3340

Will this fit your Vehicle?

In Stock Ships same business day.
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.
    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

    • Improves Blower Performance.
    • 100mm Pulley.
    • Billet Aluminum Construction.
    • Sleek Underhood Look.
    • All Hardware Included.
    • Fits 03-04 Mustang Cobra.
    Better Performance. Whether you're running a smaller pulley on your blower for bigger boost or just looking for stronger performance from your Cobra, this belt tensioner kit is a great addition to your Mustang. It uses factory mounting points on your engine, adding another tensioner pulley that changes the angle of your supercharger belt and creates more wrap around your blower pulley. The result is more contact area between your supercharger belt and your pulley, meaning less belt slip.

    Ideal for Big Boost. If you're running a smaller pulley to dial up higher boost on your Cobra, this belt tensioner kit is a must-have to make sure you're getting the most from your mods.

    Premium Quality. This premium quality pulley is made from billet aluminum for durability and a great underhood look.

    Complete Kit. This kit includes the 100mm (OEM) pulley, mounting bracket, and all necessary hardware for a hassle-free, straightforward installation.

    Application. This belt tensioner kit is designed to fit 2003-2004 Mustang Cobras.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2003 2004 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Pulley
    • (1) Mounting bracket
    • (3) Bolts
    • (3) Washers
    Installation Info
    Tech Specs
    Will it fit my Mustang?

    You Might Also Like

    Customer Photos (5) Submit Your Photo

    View All 5 Photos

    Questions & Answers (1)

    1 Top Rated Question

    If I use this tensioner with the Steeda 555-3328 2.80" drive pulley can I get by without replacing the belt?

    • When installing the Steeda Blower Belt Tensioner you would be able to reinstall the same belt.

    Helpful (0)
    Post Your Question

    People Who Bought This Item Also Bought

    Customer Reviews (13) Write a Review

    Overall Rating 4.6

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Performance Gain 4.8 4.8
    • Fit 5 5

    • 5/5

      Installation Time: Less than 1 Hour

      November 02, 2017

      Great product

      Nice quality product. Great finish. Easy install. Happy


      Year: 2003 Submodel: Cobra

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      May 09, 2017


      Great fit and super easy install. No issues what so ever. Keeps belt tight with the smaller pulley.


      Year: 2003 Submodel: Cobra

      Helpful (3)

    • 1/5

      September 26, 2016

      Bad quality

      I purchased this item to have before my dyno tune date, received this item and immediately called and returned it. The quality of this item sucks! There were small dings on the edges along the pulley and on the chrome mounting bracket. They included RUSTED bolts and screws as the hardware and one of the 13mm bolts didn't even fit inside the bracket. For paying over $150 I'd expect a little more quality finish from them.


      Year: 2003 Submodel: Cobra

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      May 18, 2016

      Steeds Blower Belt Tensioner

      Easy to install and works great. No belt slippage.


      Year: 2000 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      July 28, 2013

      This product is a great fit.

      Fast and easy install , does give the belt much needed tension when changing the size of your supercharger pulley.


      Year: 2003 Submodel: Cobra Congers , NY

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      March 22, 2013


      Great part took no time to put on and works great deff a must have for pullie swaps


      Year: 2003 Submodel: Cobra Concord, NC, USA

      Helpful (4)

    • 5/5

      April 27, 2011

      Decent, but bearing failed already.

      Good product over all, but the bearing failed pretty quick. Maybe it was just one of the bad apples, but since its been installed it has a squeal. Other than that, great product.


      Year: 2004 Submodel: Cobra

      Helpful (4)

    • 5/5

      February 08, 2011

      Steeda Cobra Belt Tensioner

      I compared the design and quality of this tensioner to another brand. The Steeda only uses one bearing compared to the two bearings of the other brand. They are both the same bearing number 6203, which is a standard bearing industry wide. So I returned the Steeda in favor of the other brand. Both use CNC process on T6061 Aluminum.

      Ron Turner II

      Helpful (5)

    • 4/5

      January 17, 2011

      Must Have

      This Idler Pulley is a must have if you are going with a 2.8" S/C pulley. Really works awesome and greatly reduces belt slippage. Install is a breeze. My only complaint would be that Steeda switched from black to chrome. A little frustrating when you're trying to keep everything under the hood looking uniform. For that I take one star away.

      Tim Smith

      Helpful (5)

    • 5/5

      October 14, 2010

      Cobra Blower Belt Tensioner (2003-04)

      The tensioner was easy to install, looks good and eliminated belt slip at the blower pulley.

      Art Bouchard

      Helpful (4)

    • 5/5

      August 10, 2010

      Highly Recommended

      Very easy bolt-on. Stops belt slip and loss of horse power. It looks awesome on the car.

      Kris Morrison

      Helpful (4)

    • 5/5

      December 25, 2009

      Belt Tensioner

      Looks good and created more belt wrap around the supercharger pulley.


      Helpful (6)

    • 5/5

      September 25, 2007


      Works great, fits real nice, real nice looking on the car.

      Dave G

      Helpful (2)

    Related Mustang Categories