Cummins 12V Early 5.9L High Output Alternator for - One Wire Turn On

Cummins 12V Early 5.9L High Output Alternator for - One Wire Turn On

Upgrade your Cummins 12V Early 5.9L for - One Wire Turn On with a high-output alternator from JS Alternators. Built with hairpin (6-phase) technology for higher idle output and improved efficiency over conventional alternators.

Key Features

• Direct Fit — Drops into your factory alternator location
• Hairpin (6-Phase) Design — More output at idle, more efficient than conventional alternators
• Premium Bearings — Built to withstand high engine RPM
• Dual Plate Rectifier — 12 heavy-duty diodes for improved cooling
• Smaller Pulley Included — Spins faster for maximum output
• High-Output Performance — Built for car audio, marine, racing, and high-demand electrical systems

Fitment

• Cummins 12V Early 5.9L for - One Wire Turn On
• Direct replacement — bolts into the stock alternator location

Notes

• A smaller pulley is included — install a 1/2" to 1" shorter belt for proper fit

Pro Tip: When installing a smaller pulley alternator, measure your current belt and purchase one that is 1/2" to 1" shorter for the best fit.