Product review (1 stars): does not fit, made cheaply and not quality tested
Does not fit.  I looked up the correct part for my washer on the GE website and confirmed it with Amazon.  This fits halfway onto the driveshaft and will not go on all the way.  I replaced the first part as defective, and the replacement will not fit either.  I scrubbed the drivetrain down really well with a wire brush to make sure it was clean, even though it already looked clean.  It appears that the tube on the coupler is too narrow, and it also has a lot of plastic bits that seem like they need to be sanded down.  It's obvious there is no quality control at GE.  I tried breaking off the excess plastic with a screwdriver, but this piece will NOT go on.  I will be looking for a new brand for my next washing machine.

Update:  I spoke with GE and they said they do not provide support and that I would have to schedule a service call.  Terrible.

Update again: I went to an appliance parts store and bought one of these for $9 that is not mangled like the two that Amazon sent me.  I have included photos of one of the defective products Amazon sent me and one of the good one from the appliance parts store.