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Ford Performance 2015-2026 Mustang Super 8.8" IRS Loaded Differential Housing 3.55 - M-4001-88355B
Loaded differential housing for Mustang IRS Fits 2018-2026 Mustang Fits 2015-2017 Mustang (see technical notes below) Iron housing with aluminum cover Includes 3.55:1 ratio gear set M-4209-88355A and Traction-Lok differential M-4204-M Custom calibration required for speedometer and shift corrections...
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