It's for the countershaft sprocket cover...
http://www.ebay.com/itm/YAMAHA-GASKET-CRANKCASE-COVER-PN-4CR-15451-00-1984-93-FJ1100-FJ1200-MODELS-/181590193629?pt=Motorcycles_Parts_Accessories&hash=item2a479e75dd&vxp=mtr (http://www.ebay.com/itm/YAMAHA-GASKET-CRANKCASE-COVER-PN-4CR-15451-00-1984-93-FJ1100-FJ1200-MODELS-/181590193629?pt=Motorcycles_Parts_Accessories&hash=item2a479e75dd&vxp=mtr)
No...
Randy - RPM