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Unifap Code 
Replacement / Starter / Alternator Number
3.307
Pulleys - Alternator
REPLACEMENT CODES
Bosch
SPECIFICATIONS
Number of Grooves
1
Total Diameter (mm)
67.0
Hole Diameter (mm)
17.0
Total Width (mm)
13.6
Keyway
Without Keyway
Alternators
BOSCH
OPEL
Application
CHEVROLET-GM
Corsa (1.0)
OPEL
Astra, Combo, Corsa B, Tigra
VAUXHALL
Astra, Cavalier, Combo, Corsa B, Corsavan
Technical Support
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