THERMOSTAT RETAINING RING, PERKINS MOTOR AF AJ AK AL AM AP AQ AR AS YG YH YK, MOTOR CAT 3054 3054B 3056, CAT M312 M315, 416C 416D 420D 424D 426C 428C 428D 430D 4232D 436C 430D THC 432D 436C 63 TH82 TH83 TH103 TH210 TH215 TH350B TH355B TH360B TH460B, JCB 3CX 4CX