DB Electrical HO-8291-220 New Alternator for High Output 220 Amp 4.3L 4.3 4.8L 4.8 5.3L 5.3 6.0L 6.0 Chevy Silverado Truck 03 04 05 2003 2004 2005 10464481 15755616 15755616W 8291 100% New aftermarket high output alternator built to meet OEM specifications 1-year warranty protects you after your purchase Factory direct pricing with no middleman markup delivers exceptional value Specs: Under full load conditions, amperage output at 1200 engine rpm will peak at 220 Amps, amperage output at 600 engine rpm (idle) will peak at 110 Amps