540a XXL GM alternator 94-21 4.3, 4.8, 5.3, 5.7, 6.0, 6.2 TRUCK / SUV

This is a 540 amp EXTERNALLY REGULATED alternator for GM applications. External regulator Is included, it comes with our single channel external regulator.  Need multiples? Message us at Facebook.com/brandxelectrical for a bundle price and a single regulator to control them 😊.

 DO NOT purchase this alternator if it’s something you plan on driving / daily driver - these are a competition ONLY alternator made for running lanes / burps etc - these are not made for demo vehicles. The chances of overheating an alternator with this much output is higher than any other unit - it’s not unreliable - we just like making sure people running alternators for demo vehicles have the appropriate output alternators for their application. Message us if you’re looking for the largest demo alternators we carry - we’d be happy to help! 

expect 240-250 amps at idle depending on idle rpm.

this is the largest automotive alternator on the market, any questions feel free to ask, we’re happy to help! 

Every unit comes with a lifetime warranty at parts cost, all units are built to order and generally take 2-3 weeks for shipping.