OTC 218504 Detroit Diesel Engine Adapter Mounting Plate - Detroit Diesel Engine Adapter Mounting Plates for 1750A and 1750 diesel engine stands. No. 218504 – For Detroit series 60 in-line 6-cylinder engines. Mounting plate includes all the necessary hardware and an engine application chart. NOTE: No. 205061 Universal Adapter Plate Assembly is required for use with all plates (Included with 1750A engine stand).