D0ZF-9600-M Air cleaner base for all 351C engines, both H code 351C-2V and M code 351C-4V engines.
Could also be found under casting number D0ZF-9600-Z. About 17-3/4" inches in diameter (although the Ford MPC shows it to be 17.00 inches). *Excludes 1970 351-2V Windsor engines. Ford part number D0ZZ-9600-M.