Top quality Replacement CDI Unit for the 2007 Yamaha Grizzly 450 421CC. These units have the highest energy and best design today. One of the leading causes of CDI failure is a bad pickup coil. It is wise to replace it when replacing the stator.
This CDI UNIT has three ports:: lf has 6 pins, mid has 8 pins, rt has 4 pins. This number is stamped on it F8T40373 OEM NUMBER 5ND-85540-10-00