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Ford Performance Pinion Flange (03-04 Cobra)

Item 50390
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Market Price $79.08 You Save 12% ($9.10)
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$69.98 (each)

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Direct Fit Replacement
      • Designed for Use with 1350 U-Joint Flange
      • 4.25" Bolt Circle
      • Genuine Ford Racing Part
      • Fits 2003-2004 SVT Cobra


      Extra Insurance. When installing a new drive shaft or gears in your Cobra, a new Ford Racing Pinion Flange is extra insurance against future problems. Why use that old, unreliable flange when you can replace it with a brand new one to ensure your drive line performs flawlessly.

      Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures a perfect fit and years of hassle-free use.

      Application. This Ford Racing Pinion Flange is a direct fit replacement for the 2003-2004 SVT Cobra Mustangs with a 1350 U-joint flange.

      Technical Note. This Cobra Flange is required for the installation of an 8.8" Rear Axle Assembly when swapping out the factory rear from a 2005-2014 V6 Mustang.

      Fitment: 2003 2004 Details

      Ford Performance M-4851-B

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (21)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 21 customers

      • February 19, 2019

        5 2003 Cobra - Jordan

        Saleen 03 cobra

        Great part must have if you doing a Terminator swap

        Helpful (4)
      • June 25, 2018

        5 2005 GT - Dwayne


        I wanted to do a 7.5 to 8.8 rear end swap and this flange made it simple

        Helpful (12)
      • January 01, 2018

        5 2003 Other - GabrielR

        New and shiny!

        It just lighted up the diff. Went in with no hassle and the best price around.

        Helpful (12)
      • November 10, 2017

        4 2004 V6 - LeopoldoR

        Good Quality, Poor rust proteccion

        Its good, it holds the power very well, I used it to upgrade my 7.5 rear end to 8.5 rear end on my 2007 v6, but after a week of use i noticed a lot of rust on it so i had to take it back out sand it down and paint it (i don't like rust at all)

        Helpful (12)
      • March 22, 2017

        5 2003 Cobra - Eljr

        03 mustang cobra

        Great part fast shipping really recommended ford racing is the best way to go with

        Helpful (12)
      • March 16, 2017

        5 1991 LX - Adamd

        Good product great shipping

        Needed this to upgrade my foxbody to the heavier duty 1350 u joints. American muscle had it in stock and I had it the very next day. Amazed with the shipping times.

        Helpful (13)
      • November 14, 2016

        5 2003 Cobra - JoshS197

        SRA swap

        Bought this to put on a solid axle when swapping into my 03 cobra in order to use the factory driveshaft. Works perfect does as it should.

        Helpful (13)
      • June 10, 2016

        5 2005 V6 - 14DIB

        Necessary part for an 8.8 conversion

        The Cobra pinion flange is a necessary part when converting an '05-10 V6 to an 8.8 axle assembly. Fits right onto the pinion and provides the correct distance for the V6 driveshaft to mate with the 8.8 rear end.

        Helpful (17)
      • May 29, 2015

        5 2003 Cobra - Bonez

        Fit well

        Easy installation 4 screw n 2 jaw puller did the trick..

        Helpful (14)
      • May 20, 2015

        4 2005 V6 - aestrada

        mustang v6 flange

        the only thing I didn't like it didn't come with instructionsare more power

        Helpful (13)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Is this flange needed to do a t56 swap in 04 gt. Thanks

      • The Ford Performance Pinion Flange is designed to mate to the 03-04 Cobra driveshaft. Depending on what type of Driveshaft you are using, this may or may not work for the T56 swap, as there are a number of different ways to do this conversion.

      Helpful (0)

      swapping my 07v6 rear end to 8.8/3.73 rear end assembly, do i need this cobra pinion flange? Also, do I need to change stock v6 DS to a one piece GT DS? 28 or 31 spline yoke needed as well?

      • If you are swapping the rear end out of a 2007 V6, you will need the Ford Performance Pinion Flange. You will not need anything else for a proper install. You can still use the factory driveshaft if this Flange is installed.

      Helpful (0)

      Work with v6 Is this the pinion flange that is needed to take a 05-09 v6 and put a 8.8 gt rear in it and still use the factory driveshaft?

      • Yes

      Helpful (0) Show 1 more answer
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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Pinion Flange

      Will It Fit My Mustang

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