JEGS has a huge selection of high performance alternators from Billet Specialties, East Coast Auto Electric, MSD Ignition, March Performance, Powermaster and more. With varying amp levels, you can get just the right alternator to meet your needs. Choose from steel, chrome, billet aluminum and more for just the right look on the front of your motor. Power up your car, truck or street rod with a high performance alternator from JEGS. Look below for an alternator wire kit or installation harness to install your new alternator professionally.