Harley Davidson Softail Fuel Tank for Fat Bob FXFB 107 FXFBS 114 5 gallons 19l. Hello, I am selling a Harley Davidson fuel tank for Softail 107 114 reference Harley 61000674 modified for Fat Bob 107 or 114 type FXFB or FFXFBS. The tank is primed and ready to paint. The tank had a slight dent (knee indentation) which was removed by a body shop and primed, I prefer to mention it but it is not visible.