These quality constructed tanks are designed to accept the standard or custom gas caps and also designed for use with the standard late-model H-D gas petcock. To give your late-model Harley that authentic Fat Bob look, these tanks are made to accept the stock dashes and also both FL and FX speedo equipment. 3.5 Gallon steel Fat Bob gas tanks, OEM 61216-69 and 5 gallon OEM 61230-69. Fits stock H-D Fat Bob frame and can be adapted to many other frames. Sold as a pair.