And will this part work on Model # GSS1800Z01?
Answer Yes, if you need a black handle WD13X10052, if you need a white handle WD13X10051.
Only the plastic leverarm is broken. Do I still need the whole kit?
Answer Hello. They do not offer just the lever arm. You will have to replace the assembly. Thanks.
What is the termination of the 4 leads to this part??
Answer Hello Katzbeck. The wires should match on each switch. Black/Black on one switch and White/White on the other switch. Hope this helps!