MTD Genuine Auger Gearbox Housing RH & LH both sides 918-0123A 918-0124A OEMThese charges are the buyers responsibility. EXPERIENCE YOU CAN TRUST! One 1 NEW RIGHT HAND RH & Left Hand LH MTD, Troy Bilt, Craftsman HOUSING HALFS HALVES. FOR THE FOLLOWING MODEL MTD UNITS. · 31AS615E099 (247.886640) (2004)–>General Assembly · 316-610E147 (1996)–>Gear Assembly.