Harley twin cam derby cover gasket softail touring dyna electra glide fatboy fxd ONE GASKET FOR TWIN CAM MODELS REPLACES OEM HARLEY DAVIDSON PART # 25416-99C FLAT STYLE OF GASKET.1999 - 2016 EVOLUTION 1340 & TWIN CAM STYLE ENGINES WITH 5 HOLE DERBY COVERS BIKES LIKE DYNA, SOFTAIL, AND TOURING MODELS. ( DOES NOT FIT FLHTCUL, FLHTKL, OR 2007 & LATER TOURING MODELS EQUIPPED WITH NARROW