Parts/S197 Mustang
S197 Mustang · Buyer's guide

S197 Mustang 8.8 Differential Gears, Install Kits, Carrier and Pinion-Flange Fitment

2005-2014 Mustang V8 with 8.8 rear axle and 2011-2014 V6 with 8.8; 2005-2010 V6 7.5 and 2013-2014 GT500 excluded

Current seller options

WHERE TO BUY

Open an exact listing, then confirm fitment, stock, price, and shipping with the seller before ordering.

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What you need to know

V8 8.8 applications and 2011-2014 V6 8.8 only. Exclude 2005-2010 V6 7.5 and 2013-2014 GT500 unless a separate exact catalog path is used. Read axle code and confirm the installed flange before ordering.

OEM numbers

Ford Performance M-4209-88373 3.73 gear setexact bearing/install kit must match model year and axle code. Ford Performance M-4851-C is documented as a 1986-2004 flange and is not an S197 fitment shortcut.

Supersession

No generic 8.8 pinion-flange interchange asserted. Gear ratio, 7.5/8.8 axle, pinion spline/flange, carrier and install-kit year/application remain separate decisions.

Fitment

V8 8.8 applications and 2011-2014 V6 8.8 only. Exclude 2005-2010 V6 7.5 and 2013-2014 GT500 unless a separate exact catalog path is used. Read axle code and confirm the installed flange before ordering.

Aftermarket options

Checked Ford Performance and Motive 3.73 paths plus year-specific install kits. Professional setup measurements and calibration are required.

Before you buy

Confirm 7.5 versus 8.8, axle code, ratio, carrier, pinion spline/flange and install-kit year before ordering. 2005-2010 V6 and 2013-2014 GT500 are excluded from the checked 8.8 paths. M-4851-C is not an S197 flange.

Research and fitment sources

Supersede reviewed 9 unique research sources for this guide. 6 also appear above as a seller or official action and are not repeated here; 3 additional citations follow.

Research last verified .

  1. Fordpartsgiant — components rear axle differential carrier
  2. Performanceparts ford — M 4851 C
  3. AmericanMuscle — mustang rear differential gears