Mean Green’s custom high-output alternators, which the company says produce more than 300 amps at 6,000 rpm alternator-shaft speed, are direct bolt-on replacements for stock single- and dual ...

In the ninth installment of Project Over/Under, we Install a Dual Battery charging System & High-Output Alternator with components from Painless Performance, Powermaster, and Odyssey Battery.

5. Support the old alternator in a soft-jawed vise. Use a screwdriver to hold the pulley stationary via the cooling fan. Use an impact wrench to remove the pulley-attaching nut.

The high-output alternator ( (AL9120N) produces 120 amps and is intended as a replacement alternator for refrigeration units that have dual temperature zones.