Bigj66 Posted July 5, 2020 Share Posted July 5, 2020 FRC8820 is the diff pinion seal for the later ‘86 on RRC but my diffs are from an early 2 door suffix D with the 10 spline diffs. Does anyone have the part number for that seal? Quote Link to comment Share on other sites More sharing options...
western Posted July 6, 2020 Share Posted July 6, 2020 my upto 1986 110 parts book gives FRC4586 for early 10 spline diffs & then FRC8220 for post 1986 diffs also 10 spline, so at a guess both would work. in either diff. 1 Quote Link to comment Share on other sites More sharing options...
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