2.2 gallon (8.3 liter). Small custom fuel tank. Tank comes with internal thread; 3/8" (right side) and 1/4" thread (left side). Takes pre-83 bajonet style gas caps. Approx. dimensions: 17" (43cm) long x 9" (23cm) wide with a 3" (7.6cm) deep tunnel. Note: When using a 3/8" petcock; the 1/4" hole must be sealed with a plug. This 1/4" plug is not included and must be purchased separately. 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.