identification

I need some help identifying a part. I tore apart a huasheng 49cc 4 stroke because it had no power and was knocking. It turned out the rod bolts had loosened up. Ordered a new rod but Now the engine is almost completely disassembled. I every part makes sense as to where it goes except for this...

haven't heard back from the guy i bought it from yet, wonder if anybody on here might know what specific brand this motor might be. it has 3 wires coming from the magneto, a curved clutch arm, short intake, and flat head case screws that would make it "unique" to who manufactured it. My other 2...