Type Sensor, coolant temperature. AUSTIN MAXI I Fastback 1500 Hatchback Petrol 04/1969 07/1980 FWD 8 68 50. AUSTIN MAXI I Fastback 1750 Hatchback Petrol 04/1969 10/1980 FWD 8 72 53. AUSTIN MAXI I Fastback 1750 HL Hatchback Petrol 10/1972 10/1980 FWD 8 90 66.