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1989-1991 Dodge W150 V6 3.9L High Output Alternator JS Alternators This is a direct fitFitment: This is a direct fit high output alternator for the 1989 1991 Dodge W150 3. 9L. Being a direct fit, this alternator fits directly into your stock alternator location. *Please be advised, some vehicles will require modifications for fitment. Plug: This high output alternator comes with a terminal block regulator, which will require wiring up an F1F2 plug to your factory wiring. Wiring instructions will be included with your order. The voltage