Product Description Specifications This nut and screw assembly replaces the adjuster nut and screw that come with our 1074, 1071, 1076 and 1073 shaft-mount rocker systems for Chrysler 273-360 and 383-440. Category: Engine Components>Rocker Arms Core: N LTL: N MPN: 1406-1 Proposition 65: Y Special Order: Y