0001193125-13-139988 DEFA14A 3 20130403 20130403 20130403 Dorman Products, Inc. 0000868780 3714 232078856 PA 1231 DEFA14A 34 000-18914 13738845 3400 E WALNUT ST COLMAR PA 18915 2159971800 3400 E WALNUT ST COLMAR PA 18915 R & B INC 19930328 DEFA14A 1 d511728ddefa14a.htm DEFINITIVE ADDITIONAL MATERIALS GRAPHIC 2 g511728452.jpg GRAPHIC GRAPHIC 3 g511728g_noa01.jpg GRAPHIC