This SBC-GMLS-390XP high-output alternator is designed to be a direct OEM replacement for General Motors LS engines. This heavy-duty alternator generates a maximum of 390 Amps at normal driving speeds and produces 220 Amps at idle.
The XP series of SBC alternators are assembled using DENSO components and produce the highest idle output. They feature a larger housing while still retaining OEM fitment without any modification required. They run cooler and are virtually indestructible. This alternator is designed to be an exact replacement to the OEM alternator for General Motors LS engines.
A precision CNC 6061T6 aluminum pulley with a .002 hard anodized coating is installed on each alternator for maximum output and durability.
This alternator comes with an unprecedented full two year warranty.