Screw in style gas cap tank, 5 gallon. All stock and aftermarket products sold for Fat Bob gas tanks will fit, and this tank has one 13/16 inch external thread fuel valve connection. Tank is unpainted. Fits Big Twin 4 speed frames 1936-1984 (except Softail). We recommend using (#K11292) fuel tank liner and prep kit after pressure testing. Don't paint until fitted and pressure tested first! (Approximate width 8", use Screw-in cap & 13/16" fuel valve). OEM# 61213-83 & 61229-67A