THIS IS ACTUALLY NEW OLD STOCK.  JUST GOT SCRATCED UP IN STORAGE

From Onan of Indiana repair shop RV center


BGM Onan 134-4890

Left side CYLINDER cover

BGM Onan 134-4890  LEFT SIDE CYLINDER COVER 

WITH INSULATION 134-5061 134-4837 134-4832


Item 4 in image


I HAVE THE TOP COVER, THE FLYWHEEL COVER AND ALL 3 OTHER SIDE  PANELS TO THE BGM MARQUIS IF INTERESTED, PLEASE ASK ME.