Heavy-duty steel construction. Replicas of O.E.M. tanks. 22mm threads. Vented cap must be used on right side. Uses screw-in style gas caps, not included. H-D# 61426-85This item fits the following vehicle applications:for Harley Davidson FLST Heritage Softail 1986-1990for Harley Davidson FLSTC Heritage Softail Classic 1988-1999for Harley Davidson FLSTF Fat Boy 1990-1999for Harley Davidson FLSTN Heritage Softail Nostalgia 1993for Harley Davidson FLSTN Heritage Softail Special 1994-1996for Harley Davidson FLSTS Heritage Springer 1997-1999