KAWASAKI MULE UTV APPLICATIONS (2009-2015):
2009-2015 Kawasaki Mule 600 KAF400-B 401cc
2009-2015 Kawasaki Mule 610 4x4 KAF400-A/C 401cc
2010-2015 Kawasaki Mule 610 4x4 XC KAF400-D 401cc
2009 Mule 610 4x4 Hardwoods Edition
2009-2012 Mule 610 4x4 Realtree APG
2011-2014 Mule 610 4x4 XC Realtree APG KAF400-E
2011-2012 Mule 610 4x4 XC Realtree APG HD
All with Kawasaki FE400D 401cc Liquid-Cooled
OEM PART NUMBERS:
Kawasaki: 21066-0039 / 210660039
Kawasaki: 21066-0039D (Variant)
Shindengen OE Stamp: SH578CA
Industry: AKI6050
PRODUCT SPECIFICATIONS:
Product Type: Voltage Regulator / Rectifier
Unit Type: Kawasaki Charging System
Voltage: 12V
Pins: 6 / Plugs: 1
Min Charging: 14.5V ± 0.5V
Max Current: 50 Amp / 500 Watt
Open Circuit: 15V
Operating Temp: -20°C to 85°C
Heat Sink: Aluminum Finned
Condition: New Aftermarket
Direct Fit OEM Replacement
CRITICAL FITMENT NOTES:
21066-0039 = Shindengen SH578CA Stamp
21066-0010 = Shindengen SH578BA (DIFFERENT PART)
CHECK YOUR PART for SH578CA stamp first
Does NOT Fit 2017+ Mule SX (Uses 21066-0767)
Does NOT Fit Mule 3000/3010/4010/Pro Series
Does NOT Fit Teryx / Brute Force / KRX
SYMPTOMS OF FAILURE:
Battery Not Charging / Dead Battery
Battery Overcharging
Dim or Flickering Lights
Engine Won't Start / Cranks Slowly
Melted Connector on Harness
VOLTAGE REGULATOR — Kawasaki Mule KAF400:
Direct-fit 12V voltage regulator/rectifier with 6-pin connector for 2009-2015 Kawasaki Mule 600, 610 4x4, 610 4x4 XC, Hardwoods, and Realtree APG UTV models with 401cc FE400D engine.
⚠️ IMPORTANT: Verify Shindengen SH578CA stamp on existing part before ordering — SH578BA is a different part.