8 1/8 INCHES SIDE TO SIDE. 1 1/8 INCH DEEP INSIDE TUNNEL (MEASURED AT MIDDLE OF TUNNEL). ALSO HAVE A RIB & SMOOTH CURVE FENDER LISTED , SHOCKS , TWO OTHER TANKS.I HAVE TWO STYLE PETCOCKS PETCOCK LISTED TO FIT THIS TANK. These are pressure tested at production but we suggest you test yourself before you get the pretty stuff sprayed on. We ALSO HAVE RIB FENDERS LISTED & OTHER TANKS. The item "STRETCH sporty FUEL TANK 2.1 gal GAS BOBBER CHOPPER FRISCO LOW TUNNEL SPORTSTER" is in sale since Wednesday, August 11, 2021. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Body & Frame\Gas Tanks". The seller is "bilsaid" and is located in Maumee, Ohio. This item can be shipped worldwide.