Allstar Performance 9" Ford 40 Spline Steel Spool (For 3.250" Carriers) - 7.9 lbs.

Replace that troublesome posi-traction unit with a high quality, 4140 steel Allstar Spool. Substantially lighter than conventional carriers, spools are suitable for both drag and circle track cars. Ultra-Lite Steel Spools have more lightening holes and a narrower ring gear flange than standard units. NOTE: When installing a spool in a differential which originally used C-clips for the axle retention, such as the Chevy 12-bolt or Ford 8. 8, it will be necessary to install a C-clip eliminator kit.