DB Electrical HO-7790-220 New Alternator for High Output 220 Amp Ford F Truck 4.6L 4.6 97 98 99 00 01 02 1997 1998 1999, 5.4L 5.4 97 98 99 00 01, E Series Van 4.6L 4.6 5.4L 5.4 97 98 99 00 01 02 03 100% 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