Ford Performance 2015-2018 Mustang IRS Loaded Differential Housing 3.55 Traction-Lok

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Description

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Loaded differential housing for 2015-2018 Mustang IRS

Iron housing with aluminum cover

Includes 3.55:1 ratio gear set M-4209-88355A and Traction-Lok differential M-4204-M

Original Equipment on 2015-2018 Mustang GT

Custom calibration required for speedometer and shift corrections

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