Need replacement lever and plastic part

A home owner from fullerton, ca says:
There are no markings on the lock. The plastic part is broken in half and I'm not sure if I need washers to keep the lever in place. i will be changing the lock. Can I get parts to make this handle work again. I am having a hard time finding a replacement.
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Casey from SWISCO responded:

Hello,

Take a look at our 82-020 handle set with 3-15/16" mounting holes and see how the specifications compare to yours. Thanks for posting! 

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