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Replacing for better performance in cooling .. this is the 18" version for capacities described as "Recommended for towing" ... so in reality it should be ok for hot Australian / NZ summers etc.
This is a lightweight Steel Fan.. measuring 18 inches across.. thats about 46.5 in the new language.... There is also another that is more specific for Pontiac bolt pattern listed here also.
Not for High Performance Use.. 4,000 RPM Limit