A-184442M1 Cylinder, Rockshaft Weight: 17.70 lbs BOLT PATTERN IS 3 3/4" X 3 3/8" WITH 9/16" NF HOLES. THE HOLE SIZES WERE CHANGED BY MASSEY FERGUSON. THE COVER MUST BE REDRILLED AND STUDS CHANGED. REQUIRES (2) 1667580M1 9/16"X3" STUD (2) 1667579M2 9/16"X4" STUD (4) 368749X1 NUTS. Pricing and ordering information can not be shown until a dealer has been selected. Enter your zip (or postal) code and continue. Zip/Postal Code: