Description
Ultra Series Ford 1G Alternator
140 AMP - Chrome - 1 Wire
Upgrade your Ford charging system with the March Performance Ultra Series Ford 1G Alternator, delivering 140 amps of dependable output with a brilliant chrome finish. Featuring 6 and 12 o’clock mounting positions and a simple one-wire hookup, this alternator provides efficient, steady charging even at low idle with ultra-low cut-in voltage regulators. Built with neoprene-sealed bearings for long life and high-efficiency copper and steel internals, it’s engineered for superior durability, reliability, and performance. Backed by the March Performance Lifetime Warranty.
Technical Details
Alternator Output Dyno Chart
March Performance Ultra Series alternators are engineered to deliver excellent charging performance throughout the RPM range, including at lower engine speeds. The graph below shows alternator output under both cold and hot operating conditions.

Additional Information
Product Type: |
Alternator |
Finish: |
Chrome |
Amperage: |
140 |
Mounting Off-Set: |
Center |
Make: |
Ford |