Toyota AW11 MR2 Cooling system parts.

The numbers are those you use when ordering parts from Toyota.
Some of these are pre facelift ('84-'86) and some are post facelift ('87-'89).
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Cooling system parts:

Radiator reservoir and vent fan   Radiator, fan and piping
Cooling piping type "a"   Cooling piping type "b"
Water pump   Oil cooler
Aircon compressor (1)   Aircon compressor(2)
Aircon compressor (3)   Heater & aircon assembly
Heater & aircon piping  
Heater blower unit (1)   Heater blower unit (2)
Cooler unit (1)   Cooler unit (2)