Looks to be a direct replacement but I really wanted to put a modern, quick load head on, but the engineered design does not allow for improvement, so your stuck with sitting and painstakingly loading string with needle nose pliers and diagonal wire cutters.
How depressing!!

Fits like a glove and work fine

Glad I could find parts
Otherwise I would have to toss redback weed Wacker.
Love not having to crank and crank. Just pull the trigger and go.

Fast shipping. Great service!