Product review (5 stars): Tight fit but not that big a deal
Others stated that this part is not 100% OEM and might be a bit tight when fitting on the motor  I think it was a bit tight but I used a bit of silicone lubricant on the metal insert and gently tapped them into place with a hammer as far down the shaft on each side they would go.  No problem.  Awesome.  Hardest part was holding the motor with one hand and trying to line it up with the rubber coupling that I installed on the clutch side first. Took about 5 tries.  Back in business!  This part fit a Kenmore 110.