06-53 DOD/JEP/GM/FRD

Installing a quality USA Standard Gear spool is a cost-effective way to get 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each USA Standard Gear 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.

USA standard steel spool for Dana 44 with 30 spline axles, 3.92 & up

USA Standard Steel Spool For Dana 44 w/ 30 Spline Axles / 3.92+

Provides 100% traction to both wheels at all times

Fits Chrysler Dana Spicer 44 with 30 spline axles

Not recommended for street driven vehicles

3.92 and up ratio only

06-53 DOD/JEP/GM/FRD

Differential Spool

ZP FSD44-4-30UP

Spool