1999 Buick Riviera V6 3.8L High Output Alternator Amperage:320 amp alternator This is a direct fit

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1999 Buick Riviera V6 3.8L High Output Alternator Amperage:320 amp alternator This is a direct fitFitment: This is a direct fit high output alternator for the 1999 Buick Riviera 3. 8L. Being a direct fit, this alternator fits directly into your stock alternator location. The 250 320amp alternator comes as a small case direct fit. The 370 400amp alternator is a large case style alternator in which will not come with the back mounting bracket and will only be mounted using the front mounting brackets. Plug: This high output alternator comes with a