Fuel Tank King 3,1 Gallons for Harley Davidson 79-81 Bobber Chopper. The description of this item has been automatically translated. King Petrol Tank 3.1 Gallons for Harley Davidson 79-81. 2 wider than the stock tank… Enough for a few more miles and to improve the look. These high tunnel tanks have stock connections but do not include hardware. They have a capacity of 3.1 gallons. For models from 79-81. ONLY FROM ME AT AN UNBEATABLE PRICE! 25574 505575 King Petrol Tank 3.1 Gallons for Harley Davidson 79-81 2 wider than the stock tank… Enough for a few more miles and to improve the look These high tunnel tanks have stock connections but do not include hardware They have a capacity of 3.1 gallons. Senza marca//Generico.