Electric wiper driver and output gear assembly thereof

An electric wiper driver and an output gear assembly (1) thereof are disclosed, the output gear assembly (1) comprising an output gear (2) which forms an output end of a speed reduction mechanism of the electric wiper drive, and a pin subassembly (30) which is formed separately from the output gear (2) and then assembled to the output gear (2) by a fixing structure (44), wherein the pin subassembly (30) comprises a base portion (32) and a snow clutch pin (20) formed integrally on the base portion (32). According to the disclosure, manufacturing cost of wiper systems can be reduced.