Page 13 of Mark Williams Racing Products by Mark Williams Enterprises, Inc.

steel spools all mark williams steel spools are precision machined from 4140 steel forgings on cnc machinery to ensure accuracy the ring gear register and bearing diameters are precision ground with the spool mounted on a special arbor to assure concentricity between the splines and the ground surfaces the final grinding operation also ensures zero runout on the ring mounting surface engineered for maximum reliability mw spools also have an increased cross-section under the ring gear register to prevent ring gear deflection mw spools are heat treated in-house with the same austemper through hardening heat treat process as mw s hi-torque axles mark williams steel spools are offered in both standard and lightweight versions the major differences are the addition of lightening holes drilled through the hub of the spool and a profile milled ring gear flange this reduces the weight by as much as 25 over the standard version without sacrificing the strength of the spool see footnotes for wheel bearing requirements 53137 53140 standard steel spools 53120 53132 53136 35 spline 8 ford spool .240.00 35 spline 8.8 ford spool .240.00 40 spline 9 ford spool .240.00 53150 53160 53164 53170 53176 35 spline 57 64 olds/pontiac spool .240.00 35 spline 12 bolt chevrolet spool .240.00 30 spline 12-bolt chevrolet spool .240.00 35 spline dana 60 spool .240.00 40 spline dana 60 spool .240.00 mw 35 spline 10.5 lbs 3 mw 35 spline 14 lbs 3 for 3.250 bore case requires 45 mm bore wheel bearing and matching housing ends 11 lbs 2 mw 35 spline 16 lbs 3 mw 35 spline 14 lbs 1 3 stock type 30 spline 14 lbs 1 mw 35 spline 21 lbs requires 45 mm bore wheel bearing and matching housing ends 20.5 lbs 53139 53140 53144 53146 53130 28 spline 9 ford spool .240.00 35 spline 9 ford spool .240.00 31 spline 9 ford spool .240.00 35 spline 9 ford spool .240.00 35 spline 8.5 gm 10-bolt spool .240.00 stock type 28 spline 10 lbs mw 35 spline for stock 2.893 or 3.062 case 11 lbs 3 stock type 31-spline 12 lbs mw 35 spline for 3.250 bore case 12 lbs 3 mw 35 spline for 1970 or later 14 lbs 3 1 53190 53180 53186 35 spline dana 60 spool .240.00 35 spline 8-3/4 mopar spool .240.00 30 spline 8-3/4 mopar spool .240.00 stock type 35 spline 21 lbs mw 35 spline 14 lbs stock type 30 spline 14 lbs lightweight steel spools d1554 33 spline 9 ford spool .240.00 strange engineering spool not profiled 53129 53163 53165 53173 53175 53177 53187 53195 53265 40 spline modular 12 bolt lw spool .290.00 35 spline modular 12 bolt lw spool .290.00 35 spline12-bolt chevy lw spool .290.00 35 spline dana 60 lightweight spool .290.00 35 spline dana 60 lightweight spool .290.00 40 spline dana 60 lightweight spool .290.00 35 spline 8 3/4 mopar lw spool .290.00 35 spline dana 60 lightweight spool .290.00 35 spline 12-bolt lightweight spool .290.00 mw 40 spline 12.5 lbs mw 35 spline 12.5 lbs mw 35 spline 11 lbs mw 35 spline for series 3 gears 17 lbs mw 35 spline 17 lbs requires 58505 bearings and proper housing ends 16 lbs mw 35 spline 12.5 lbs stock type 35 spline 17 lbs mw 35 spline 3.250 bore carrier 53125 53127 53134 53137 53138 53145 53147 53148 40 spline 9 ford lightweight spool .290.00 40 spline 9 ford lightweight spool .290.00 35 spline 8.8 ford lightweight spool .290.00 40 spline 9 ford lightweight spool .290.00 35 spline 9 ford lightweight spool .290.00 35 spline 9 ford lightweight spool .290.00 35 spline 9 ford lightweight spool .290.00 35 spline 9 ford lightweight spool .290.00 for 3.812 case bore and 1/2 ring gear bolts 9.7 lbs for 3.812 bore case and 7/16 ring gear bolts 9.7 lbs mw 35 spline 11 lbs for 3.250 bore case 8.5 lbs summers bros type for 3.250 bore case 9 lbs mw 35 spline for 2.983 or 3.062 bore case 8.75 lbs strange type for 3.250 bore case 10.5 lbs mw 35 spline for 3.250 case 9 lbs notes 1 g.m applications require c-clip eliminator or other axle retention method 2 40 spline spools require 45 mm bore wheel bearing and matching housing ends 3 35 spline spools require wheel bearings and housing ends that utilize with 1.531 or larger bore toll free 800-525-1963 on the web www.markwilliams.com 13

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