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The SBC-F2.5D-250XP generates a maximum of 250 Amps at normal driving speeds and 185 Amps at idle. The OEM alternators for this engine produce a maximum of 110 to 220 Amps depending on the vehicle. By upgrading to the 250XP alternator you are gaining between 30 and 140 Amps.


  • Idle Output: 186 Amps
  • Max Output: 251 Amps

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