Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Natural)

Crazy good voltage easy install got the specified smaller belt for my vehicle fit with no issues cold start getting about 15.2 volts once everything is charged up and warm sitting at about 14.8v puts out real good power at idle 600-650rpm drops to around 14.3v with 2 agm batteries and a 4k amplifier and a 1400w amplifier

Alternator working really well on 2001 chevy Tahoe little to no voltage drop when Bass hits would definitely buy another..5.3 vortec engine original belt fit just fine Didn't need a shorter one.

Replace my alternator with this 400 and gave my smart 5k blow my speakers boxes apart, but make sure you replace your vehicle main fuse with bigger amperage

Asta ahora todo va bien, si alcanzo a percibir un poco las caídas de voltaje pero es algo muy leve, ya que tengo alrededor de 5k w rms corriendo en este alternador y valla que le suda, hay que aclarar que esto sería imposible en alternador de stock, pero como dije: asta ahora todo va bien con el y nada de problemas eléctricos. Antes de todo recuerden hacer big3 en el, recomiendan cable 0 pero yo me fui con 2/0

This alternator operates beautifully. Comes with DETAILED instructions on how to install it with the proper harness extension and belt length. Keeps my d4s jp63 and my lithium bank very happy. Will purchase again, and will refer my friends.

pos broke on mewas able to drive 100miles 4.8L chevy 07 silverado 1500

No voltage drop runs two batteries with no sweat