MW 40-spline aluminum spool allows the super light gun drilled axles in the Dana 60™ rear. Due to the large spline, 58505 wheel bearings and proper housing ends are required for use with 4 series gears (4.56 to 7.17 Dana™ gear) (4.10 to 7.17 other manufacturers' gear). Manufactured from aluminum forgings. 8 lbs.

Installation - Service Instructions can be found on Service Bulletin #0046.

*Dana 60™ is a trademark of Dana Limited. MW products are not manufactured or authorized by Dana.