AD4-203 Perkins engine upper gasket set. For the following models: MF65, 165, early 255, Ind. 302, 304, 356, 3165 and 300 combine, with a direct injection diesel motor identified by the injectors setting in the head at an angle. 3.60 inch bore. Alt # 732691M91, 746051M91 & 4222455M91