3.5 Gallon capacity. Use bayonet style gas caps and 13/16" fuel valve. Fits Big Twin 4 speed frames 1936-1984 (except Softail). Replaces OEM # 61219-83 & 61425-83. Raw steel finish. These tanks must be pressure tested, sealed and pre-mounted on frame to verify compatibility of all related parts before painting. Gas caps are not included with any of these gas tanks.