Our HD rotor for the 4 cylinder 170/175 Model Tractors as well as the 6 cylinder D19 Gas Tractors.  This rotor fits the following Delco Distributors:
1112688, 1111311,1112653, 1112667, 1112668
Works with our 1510-25 4 cylinder screw cap or our 1510-29 6 cylinder screw cap found on Models: 180/185, 190/190XT, & 200 series Tractors.