Part Number: JH3401712
This is an aftermarket part and it fits the G150, G200 & GV200 engine models.
It can also fit the very early Honda GX110, GX140 and GX160 engine models with a pullstart like the one in these photos.
replaces part no. 28400-883-040ZB
single metal pawl type ( see picture )
175mm across the longest part and 48mm high