Replaces : MK-143339-9, MK-195-223-311, MK-195-223-312

Dolmar / Makita Original Clutch Drum Sprocket 3/8" pitch, part number # 195-223-312 = 143339-9.

Replaces previous part numbers: 195-223-310 & 195-223-311. 

This part is compatible with the following chainsaws:

Makita EA4300. 
Dolmar PS-350, PS-351, PS-420, PS-421, PS-510