The alternator is not a 50 amp alternator as listed. It came with a test report in the box and it shows it is a 40 amp alternator. The maximum it delivers in the test is 47 amperes at 6000 rpm. This is the same one I found from other sellers for $85. I thought it was 50 amps so I spent a bit more on it but it's not 50 amps. Buy cheaper elsewhere.