DB Electrical ADR0223 New Alternator For Chevrolet, Gmc 7.4L 91 1991, 7.4 7.4L Chevrolet Gmc C10 C20 Pickup 88 91 1988 1991, P Series Van 87 88 89 90 91 92 93 94 95 96 1987 1988 1989 1990 1991 1992 100% New aftermarket unit built to meet OEM specifications 1-year warranty protects you after your purchase Factory direct pricing with no middleman markup delivers exceptional value