Allis Chalmers Ignition Switch with Keys 
Fits Allis Chalmers, Yanmar: 170, 175, 180, 180 (S, 185, 190, 190XT, 200, 210, 220, D10, D12, D15, D17, HD3, HD4, I40, N Before 12800)
OEM Part Numbers: 233759, 241965, 70241965, 70241965-A