Yukon steel spool for Ford 9-inch with 35-spline axles converts the axle to full-time lockup and provides 100% traction to both wheels for off-road and racing applications. The spool installs in place of the differential carrier and is constructed for heavy-duty use and long life. Intended for dedicated non-street use; continuous lockup makes it unsuitable for regular street driving.
Yukon Gear Steel Spool For Ford 9in w/ 35 Spline Axles