Engine ID Codes
VW stamped all type 1’s and pre ‘72 type 2’s on the right case half just below the generator pedestal.
The first and sometimes the second digit/letter denotes the basic engine group.
So the best you can do is narrow down the engine to a group.
Here are the groups
Type 1 Code - Year -Engine – Remarks
4 – 60 – 1200 – 40 HP
5 – 61 – 1200 – 40 HP
6 – 62 – 1200 – 40 HP
7 – 63 – 1200 – 40 HP
8 – 64 – 1200 – 40 HP
9 – 65 – 1200 – 40 HP
FO – 66 – 1300 – 8mm oil pump studs
HO/TO- 67 – 1500 – 8mm oil pump studs
H5 – 68-69 – 1500 – 8mm oil pump studs
B6 – 70 – 1600 – Dual Relief – single port
AE – 71-72 – 1600 – Dual Relief – Dual Port
AH – 73-74 – 1600 – 8mm Head studs w/case savers
AJ – 75 – 1600 – Fuel injected, no fuel pump mount.
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