Part# 337-48091

"Trac-Lok" Dana 60 Differential. Dana 60 spicer 2-pinion style clutch sure-grips work nicely for street cars making under 400 hp. Note: Chose at time of order 30 spliner, 35 spline.5 series (fits 4.56 and 4.88 ratios), or 3 series (fits 3.54, 3.73 and 4.10 ratios).