Product: USA Standard Gear ZIKF8.8-S-31 Standard Open Differential Spider Gear Set for Ford 8.8", 31 Spline
Brand: USA Standard Gear
USA Standard Gear standard spider gear set for Ford 8. 8", 31 spline, open differential
7/8" cross pin shaft. 31 Spline application.
Does not work on 28 Spline applications. Does not work on positraction/limited slip differentials.
1985 & older 31 spline applications have a 3/4" cross pin shaft and require a new carrier case.
Technical Note 1: There were both 28 and 31 spline factory options available for over lapping years. Please check your spline count before ordering.

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