Ring and Pinion, 3.42 Ratio, 30 Spline Pinion, 8.5 / 8.625 in, Fits GM 10-Bolt, Kit. Ring and Pinion Ratio 3.42. Pinion Gear Tooth Count 12. Pinion Spline Count 30. Ring Gear Bolt Thread 7/16-20 in. Ring Gear Color Natural.
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