This auction is for 1 new complete regulator rectifier assembly.

Replaces Honda part 31600-435-000 & Shindengen SH223 

Fits 1979-1981 XL500s (and others, contact me if you think this works for your bike)

This is an aftermarket unit, which WILL NOT line up to both of the original mounting bolts.

These are brand new, I have installed the plugs and tested the diodes on all of them. 

Please ask if you need more details or photos.