This is a 12 volt 100 amp 14 volt internally regulated simple two wire hookup replace any 12-volt generator, comes with new D.A. plug. Pulley is for 3/8" belt. Body of alternator is natural aluminum finish. There are chrome and polished bodies available at extra cost. Powermaster products sold and used on the street, including all chrome products, are warranted for one year to be free of defects in workmanship and materials. This warranty is limited to repair or replacement only. Consequential damages are not covered. Chrome of any manufacture is subject to chips or discoloration when exposed to heat. For this reason, defects in the finish are limited to the time of installation.