Gas tank Knucklehead Panhead Shovelhead 36-84. Fittings. Gas Cap. Gas Line. Gas Tanks. Gas Tank Decal. tank prep and sealer. Petcock. Tank Divider. Tank Emblem. Knucklehead EL FL 1936-1947 | Panhead EL FL FLH 1948-1965 | Shovelhead FL FLH 1966-1984