Seachoice Nylon Fuel Tank Vent. Get your boat in ship-shape with top notch replacement parts for bottom dollar! Quality Vent from Seachoice accommodates 5/8" hose. Maximum hull thickness is 3/4". Order Yours Today! Please Note: Once items have contained gas, kerosene, butane, diesel, or oil they cannot be returned to us. Seachoice Nylon Fuel Tank Vent