MacBook Pro Left Fan Assembly 17" - 922-7953 307 System Pull. Guaranteed for 90 days. Genuine part. Apple Apple MacBook Pro 17" Fan, Left Parts can usually not be interchanged - please check to make sure that your original part has this part number or that the manufacturer recommends this replacement part for your system. NEWAPPLEMacbookProCoreDuo17ModelA1212LeftFan9227953