Support Core Identification Alternator Core Identification 24SI 28SI Core Identification

24SI and 28SI 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.

Heavy Duty Alternator

24SI and 28SI Alternator Core Identification

24SI Alternator Core

24SI regulator is flat.

24SI casting fins are attached (pad mount only).

24SI pad mounts are round.

28SI Alternator Core

28SI regular has fins.

28SI casting fins are short (pad mount only).

28SI pad mounts are square.