Used on Trailmaster and Hammerhead 150cc go-karts, except for HammerHead GT and GTS models.  Also used on Carter 150cc go-karts
and many other Chinese models.
Hammerhead GT and GTS models use regulator part # 6.000.124-GTS

NOTE* USE THIS UNIT IF YOUR BUGGY HAS AN 8 POLE STATOR OR IF YOU ARE SWITCHING STATOR FROM 6 POLE TO 8 POLE