Craftsman Power Washer with Grip and Go Technology

I have an older pressure washer and I stepped on the water hose and broke off the neck of the plastic pressure switch #705779 on inlet of pump that controls the start/ stop feature of engine. 
 
I can bypass this plunger switch but it would be nice to have washer function with start/stop feature. But, this switch is $150! Its made by Yuanben of China.
 
Has anyone found a substitute switch that can be plumbed onto inlet using either inline or T-fittings? 
 
Thanks,
JP