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The SBC-GM4-390XP is a direct bolt on high output alternator for GM AD244/DR44 4-Pin applications. It installs in the OEM mounting location and connects directly to the vehicle’s wiring harness with no modifications.

The SBC-GM4-390XP can also be used in multi-alternator kits that use GM AD244/DR44 mounts.


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

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