WAI 10939N Alternator - New, 12 Volt, 20 AMP, for Yanmar Engine and John Deere Tractor

Manufacturer

WAI

Features & Benefits

• Internal regulator helps stabilize voltage output during RPM changes
• Cooling vents help reduce heat buildup during long operation periods
• Lightweight frame helps reduce strain on mounting brackets
• Performs reliably during cold starts where battery draw increases
• Helpful for vehicles running moderate auxiliary equipment needing constant charge

WAI Alternator

The WAI Alternator is a compact charging unit rated at 12 volts and 20 amps, providing steady electrical output for engines that rely on lightweight power generation. The alternator restores battery charge during operation while supporting auxiliary loads such as HVAC blowers, lighting, or electronic controls. Its internal layout promotes smooth current delivery at varied engine speeds, helping reduce voltage fluctuation during stop-and-go driving. The drop-in fit makes it a straightforward replacement for small-frame alternator applications across several commercial platforms. If fluctuating voltage starts affecting day-to-day operation, the WAI 10939N acts as a straightforward fix that brings the system back to proper balance.