Yukon Gear Yukon steel spool for Dana 80 with 37 spline axles 4.10/up - YP FSD80-4-37

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.

• Fits Chrysler Dana Spicer 80 w/37 Spline Axles
• 4.10 And Up Ratio Only
• Provides 100 Percent Traction To Both Wheels At All Times
• Not Recommended For Street Driven Vehicles