The copper sealing ring mentioned here has been used for various applications.
Intake manifold
Type 1 engines from 30 hp
Type 1 engines from 34 hp up to engine number 6 916 250
Fuel tank cap
Beetle: 8.1967 until 1967 (VIN 118 431 163 ) only for Scandinavia
1969 (VIN 110 2051 298 ) until 1970 (VIN 10 2051 298 ). 110 2529 307 ) all countries
Karmann Ghia:
8.1967 until 1967 (chassis VIN) only for Scandinavia
1969 (VIN 140 2051 298 ) until 1970 (VIN 140 2529 307 ) all countries
VW Thing:
until 1970 (VIN 180 2562 428 )
Automatic gearbox oil change
Beetle 1971(VIN 111 3115 295 ) and later
Karmann Ghia 1971 (VIN 141 3115 295 ) and later
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