Rotary 9134. FITS MTD 1992 & LATER PUSH & SELF-PROPELLED MOWERS WITH BRIGGS & STRATTON ENGINES; MODELS: 083, 088, 123-238, 246, 328, 338, 414, 416, 418, 424, 426, 428, 446, 448, 456, 458, 460-479, 488, 518 & 528. "Z" BENDS AT BOTH ENDS.