This pop-up tank cap in ultra-flat design with a right-hand thread and ventilation suitable for all Harley-Davidson tanks from 1996 onwards (Dyna, Softail, Heritage, Fatboy, Touring etc. ...).The exception is models that have a ventilation pipe in the tank neck, which rests against the locking of the pop-up function in the middle of the lid.What makes the high-quality lid with a seal special is the retractable knurled screw with a pop-up function. Pressing the closed tank cap with your thumb turns the knurled screw 90 degrees, recessing it. The lid is now ultra-flat, giving it a classic smooth look.External diameter: 60 mm. Height with countersunk knurled screw: 36 mm. Diameter of the knurled screw: 38 mm. Height of the knurled screw: 9 mm. Thread diameter approx.: 45 mm. Thread depth approx.: 28 mm.