The USA Standard Steel Spool for Dana 60 with 35-spline axles delivers full-time lockup by replacing the carrier assembly with a one-piece spool. Made from heat-treated 8620 steel for strength, it installs in place of the differential carrier and is best suited for dedicated off-road or drag applications. This spool fits Dana Spicer 60 housings with 35-spline axles for 4.56 and up final drive ratios.
USA Standard Steel Spool For Dana 60 w/ 35 Spline Axles / 4.56+