National Differential Pinion Seal for 2013-2018 Ford F-250 Super Duty/F-350 Super Duty/F-450 Super Duty/F-550 Super Duty
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The SKF Seal (part number 18637A) is a direct-fit replacement for 2015-2018 Ford vehicles.
Features:
Fits: 2015-2018 Ford models including F-150, F-250 Super Duty, F-350 Super Duty. Confirm your year, make, model, and engine before ordering.
Fitment Notes: Warner Transfer Case
Interchanges With: Ford FL3Z7B215C, Kotek 11902