Eagle HIgh fits for High Amp 250 AMP Alternator 4 pin plug for Chevy Sierra Pickup 4.3, 4.8, 5.0, 5.3, 5.7, 6.0, 6.5, 6.6, 7.4, 8.1 liter (2000-2005) replaces part # Delco 15755616W, 10480388, 100% NEW Aftermarket and Made with the Highest Quality Part Make sure to run 4 gauge wire and you have good new battery Computer tested for consistent Quality Meets or Exceeds Original Specifications