T187246 Socket Fits John Deere 850J, 850KOne New Aftermarket Replacement Blade Pivot Ball Joint Socket Fits John Deere Crawler Dozers This aftermarket replacement ball joint socket (replaces OEM part number T187246) is part of the dozer blade pivot assembly on Fits John Deere J Series and K Series crawler dozers. It seats against the blade pivot ball and works with the socket shims and retainer caps to secure the blade mounting assembly, enabling the blade to pivot freely during grading