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Yukon steel spool for Ford 9-inch with 33-spline axles converts an open differential to constant lockup, delivering 100% traction to both wheels for racing or off-road use. This spool is double-drilled for 7/16" and 1/2" ring gear bolt patterns to match common hardware and installs in place of the carrier assembly. Not recommended for regular street driving.
Yukon Gear Steel Spool For Ford 9in w/ 33 Spline Axles
