Stens 285-187 Stens Jackshaft DescriptionStens JackshaftMurray 491921MAReplaces OEMMurray491921, 491921MA, 91921Specs.600" OD spline1 1/4" OD shoulderLength6 3/8"OD5/8"Thread9/16"-18 UNFAdditional InfoCross Sell285-187 Use with 285-183 Jackshaft NutCross Sell285-187 Use with 285-332 Spindle Assembly