5 Most Common Vinyl Wrap Mistakes Harley, gas tank aluminum, ribbed, chopper, bobber, hd dimensions 16'' lenght x 8'' height x 6.5 width (40 cm x 20 cm x 17 cm). Petcock bung welded 22mm will fit Golan, Pingel, etc. Gas cap bung already welded. This item is in the category eBay Motors\Parts & Accessories\Motorcycle Parts\Body & Frame\Gas Tanks.