Yukon Gear Steel Spool For Toyota T100 8.4in w/ 30 Spline Axles - YP FST100-30

Yukon Full Spools are a cost-effective way to convert a diff to 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each Yukon spool is made from high-quality 8620 steel and heat treated for additional strength. A spool is an outstanding choice for dedicated off-road and drag racing vehicles only.
Installation Instructions