DB Electrical HO-7880-11-220 New Alternator For High Output 220 Amp 2.5L 2.5 Chevy S10 Truck 87 88 89 90 91 1987 1988 1989 1990 1991, 2.8L 2.8 Camaro 87 88 89 1987 1988 1989 1101139 1101142 1101163 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