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Ford GT500 Power Brake Booster (05-08 All)

Market Price $282.99 You Save 12% ($33.00)
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  • Item 384051

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    Features & Details

    • Shelby GT500 Power Brake Booster
    • Improves Braking Performance - Reduces Hard Pedal
    • Perfect Companion to an Aftermarket Big Brake Kit
    • Original Factory Equipment - OE Fit and Finish
    • Genuine Ford OEM Part - 5R3Z-2005-A
    • Fits All 2005-2008 Mustangs
    Improves Stopping Power. Improve the stopping power of your S197 Mustang to better than new performance by upgrading your old, worn out power brake booster with a direct fit Shelby GT500 replacement. This Genuine Ford GT500 vacuum power brake booster is the perfect companion when installing an aftermarket big brake kit on your 2005 to 2008 GT or V6 Mustang.

    Genuine Ford Part. This is that same exact Power Brake Booster that is featured as standard equipment on the Shelby GT500 and limited edition Boss 302 Mustangs. A GT500 vacuum brake booster will help reduce pedal effort by up to 30% when compared to the stock GT brake booster.

    Application. This Genuine Ford replacement Power Brake Booster is designed for use on all 2005 to 2008 Mustangs, including the V6, GT, Bullitt and Shelby GT500 models. Will not fit 2009-2014 Mustang models.

    Fitment: 2005 2006 2007 2008 Details

    MPN# 5R3Z-2005-A

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Power Brake Booster
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (3)

    3 Top Rated Questions

    Will this work on a 2006 Saleen S281 SC with the 14inch brake kit?? Ive bee having issues with soft brakes..

    • The Ford GT500 Power Brake Booster is the OEM booster from the GT500. This should have no issues with working on an S281C, and will offer better brake feel, however I would recommend verifying that the booster is the cause of the soft pedal feel issue you are having, as a number of components could cause this.

    Helpful (1)

    I have AM Bullitt wheels so I can’t install a big brake system. Will this booster increase stopping power with regular sized brakes?

    • This will not give you any more stopping power no.

    Helpful (0)

    Will this work well on stock brakes? (2005 GT)

    • This will work on a 2005 GT model Mustang that has stock brakes as this is a replacement over the stock equipment.

    Helpful (0)
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    Customer Reviews (4) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Full Day

    • Fit 5 5
    • Bang For Your Buck 4.25 4.3
    • Stopping Power 5 5

    • 5/5

      Installation Time: Afternoon

      July 19, 2018

      Ford GT500 Power Brake Booster

      I had to replace my booster and decided to purchase this. My goodness, it is much better than my original on my GT! Smooth and responsive. But if you install the big brake then that'll be much better and this GT500 can handle the big brake!


      Year: 2005 Submodel: GT

      Helpful (7)

    • 5/5

      Installation Time: Shop Install

      May 15, 2018

      Recommended to accompany big brake kits

      This booster offered much more consistent pedal pressure after installing a PFC/Performance Friction Z31 Caliper 355mm Big Brake Kit on my 2007 S197. Recommended.


      Year: 2007 Submodel: GT

      Helpful (7)

    • 5/5

      Installation Time: Afternoon

      June 29, 2017

      Much better modulation

      With the big brakes on a gt th pedal was over sensitive This booster tames the brakes till needed for DD


      Year: 2008 Submodel: GT

      Helpful (8)

    • 5/5

      May 15, 2017

      Highly recommended

      Hello i recently bought this part for my 11 stang i gave more brake power to my stang and like said highly recommended no regrets!


      Year: 2011 Submodel: V6

      Helpful (9)

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