New Alternator Replace Delco 10SI 1 Wire Install 63 Amp W/V Belt Pulley Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac Brand New - Manufactured with New Premium Quality Components Engineered to Meet or Exceed OEM Specifications Self exciting, 1-wire hookup Very low cut-in Standard & metric mounting One Year Hassle Free Guarantee ** See Product Description for Fitment Chart **