DB Electrical ADR0148 New Alternator For Chevrolet, Gmc Jimmy Sonoma Oldsmobile Bravada 4.3L 4.3 5.0L 5.0 5.7L 5.7 Chevrolet S10 Pickup Blazer 91 92 93 1991 1992 1993 321-456 321-457 321-555 334-2360 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