1971
F0 1966/67 1300cc
HO 1966/67 1500cc
F0 1966/67 1300cc
H5 1968/69 1500cc
to find the year, you need to know the letters prior to the number
1600cc from Model Year 1971 - www.lennysvw.com
From August 1971, this engine was used in California delivered cars. Had to do with emmisions.
you need to have the letters that come before the numbers to find that info
H 1965 1500cc it came out of a type 2
August 1966 thru July 1967, 1500 cc, 53hp
AE 1971/72 1600cc - dual relief, dual port