Flanged 31 spline axle axles have 3.15" bearings installed. axle housing only is 57" wide from housing end to housing end without axles. axles have three bolt patterns in all axles, 5 x 4.5" small ford, 5 x 4.75" GM and 5 x 5".
67-72 C10 9 inch 62" New Ford 9" Smooth Rear End Housing Kit with 31 spl axls
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Nitro Ford 9 inch full spool, 40 spline, 2.25 inch journal, for "Pro 10" housing
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Ford 9 inch 60 inch HD New Smooth Back Rear End Housing Kit with 31 spline axles
ARP 250-3020 - 9" Pinion Support Stud Kit Blk For Ford 9 Inch 3/8-16 3/8-24
