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21SITM and 22SITM Alternator Core Identification

Use this page to help identify the correct core group for your core returns.  If you know the part number, please visit our e-catalog for model family idenfication.

21SI Alternator Core


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21SI rear cover without name.

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21SI casting smooth side.
 
 

22SI Alternator Core


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22SI rear cover with name.


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21SI casting smooth side.