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Once you change the gears in your differential, you need a new speedometer gear to recalibrate your speedometer. They're inexpensive, and only take a few minutes to change.
These Recalibration Gears fit 1979-1998 Mustangs. Please check our Hot New Product Section for information on 1999 and 2002 Mustangs.
Instructions: Note transmission type, model and resulting drive gear. Cross reference with your rear-end gear ratio to find the correct "recalibration" gear for your application.
CA Residents: Cancer and Reproductive Harm WARNING www.p65warnings.ca.gov.
