Sure, you can order the etrailer Replacement Hardware Kit with part number # RHK and it will include all the hardware it originally came with, and in this case that includes the square spacer/washer, and the fishwire. However, there is not a U-bolt used with this hitch. When you are on the product page just enter the brand and model.
Installation of this hitch will include screwing bolts into existing weld-nuts on the car frame, which can be full of dirt and crime from years of travel.... view full answer...