3.3 Gallon (12.5 liter). Complete with a custom flush-mount style gas cap. The classic since decades; in a cool old school ribbed version. Available with for 83-up style screw gas cap; pre-83 bajonet style or with a flush-mount bung for which the special flush mount gas cap is included. Takes a 3/8 NPT petcock; located on the right side. The rear section is equipped with 1/4" crossover fuel outlets. Dimensions approx. 17" long x 11.5" wide; tunnel width 2". Note: It is advised to pressure test; seal and test fit all tanks before tanks are painted and installed. Some tanks are painted; but this coat is applied for rust prevention during storage only.