Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 From Rovos! Enter daily!
Win Any MBRP XP Series Exhaust! Enter Daily

OPR Brake Master Cylinder (05-08 All)

Market Price $100.79 You Save 11% ($10.80)
Our Price


FREE Shipping

  • Item 100954

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.
    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

    • Regain Lost Braking Performance
    • Premium Quality Cast Aluminum
    • 100% New! - Not Re-Manufactured
    • Reuses Original Reservoir and Cap
    • Bore Size 27mm (1-1/16")
    • Front Outlet - M12x1.0; Rear Outlet - M12x1.0
    • Ford Motor Company Equivalent Part# 4R3Z-2140-AA, 6R3Z 2140-AA or BRMC9
    • Direct Bolt-on Installation
    • Fits All 2005-2008 Ford Mustang Models
    More Stopping Power. Improve the stopping power of your S197 Mustang by replacing that old leaky Brake Master Cylinder with a brand new direct fit replacement from OPR for an inexpensive maintenance repair. This OPR Mustang Brake Master Cylinder is 100% brand new, not re-manufactured like other companies sell and it is fully tested at the time of assembly.

    Premium Quality Construction. Cast from premium quality aluminum to the original factory specifications, this OPR Master Brake Cylinder features factory style connections with high-quality EPDM rubber compound seals. Manufactured to strict engineering quality standards, OPR Brake Master Cylinders meet or exceed S.A.E. specifications for years of reliable leak free operation.

    Direct Fit Replacement. This OPR Master Brake Cylinder is a direct fit replacement for your Mustang’s original stock master cylinder, so it simply bolts into place. Seeing that installation requires bleeding the brake system professional installation is highly recommended.

    Application. This OPR Master Brake Cylinder is a direct fit replacement for the 2005-2008 Mustangs, including V6, GT, Bullitt and Shelby GT500 models. Equivalent to Ford part# 4R3Z-2140-AA, 6R3Z 2140-AA or BRMC9.

    Fitment: 2005 2006 2007 2008 Details

    MPN# 100954

    CA Residents: WARNING: Cancer and Reproductive Harm -

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

    You Might Also Like

    Customer Photos

    More Products You Might Like

    Q & A

    No questions about this product yet.

    Ask the First Question

    Recommended For You

    Customer Reviews (2) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$100-$250

    • Fit 5 5
    • Bang For Your Buck 4.5 4.5
    • Stopping Power 4.5 4.5

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      December 23, 2014

      Perfect replacement!

      Great factory replacement. If yours is leaking and worn, replace it with this part form American Muscle. Works perfectly and well built.


      Year: 2006 Submodel: GT Georgia, USA

      Helpful (12)

    • 5/5

      Installation Time: Afternoon

      July 21, 2014

      Brake Master Cylinder

      Bought a couple of new brake master cylinders due to mine being pretty leaky. Great quality and fits like a champ. You can definitely feel the improved stopping power paired with high performance brake pads. I definitely recommend this brake master cylinder, thanks AM.


      Year: 2006 Submodel: V6 Midlothian,TX

      Helpful (13)

    Related Mustang Categories