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This 390 Amp High Output alternator is specifically designed, engineered, and manufactured for the Ford 3.5L Raptor gasoline engine. It is a direct bolt in replacement for the OEM alternator with no modifications required. The 3.5L Raptor engine began production in 2008 and can be found in several Ford. The SBC-FR3.5-390XP generates a maximum of 390 Amps at normal driving speeds and 220 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 390XP alternator you are gaining between 30 and 140 Amps.

 

  • Idle Output: 220 Amps
  • Max Output: 392 Amps

 

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