DB Electrical HO-8489-200 New Alternator for High Output 200 Amp 6.6L 6.6 Diesel Chevy GMC C K Sivlerado Truck 06 07 2006 2007 15845337 15845338 8489 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 200 Amps, amperage output at 600 engine rpm (idle) will peak at 100 Amps