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

What you get with this Yukon Gear & Axle USA Standard Steel Spool is a solid piece of 8620 steel, heat-treated for extra strength, designed to replace your differential carrier assembly. This spool is built to give you 100% lockup, meaning both axles turn at the same speed all the time. It’s a cost-effective way to achieve that kind of traction, but it's important to know this is strictly for dedicated off-road or drag racing vehicles, not for daily drivers on the street.

This spool is made for Dana 44 differentials that use 30 spline axles and are set up with a 3.92 or numerically lower gear ratio. Because it locks both axles together, it's a popular choice for serious off-road rigs that need maximum grip in tough situations, or for drag cars that want consistent power delivery off the line. The installation is straightforward because it’s designed to go right in place of your stock differential carrier.

Keep in mind that a spool will change how your vehicle handles on pavement, making turns more difficult and potentially causing tire scrub. It's a specialized part for specialized applications where 100% traction is the priority.