We have aftermarket 42 gallon and 45 gallon auxiliary tanks and 100 gallon, 120 gallon or 150 gallon cylindrical fuel tanks in 19 inch and 26 inch diameters for your Volvo. Top off your new aftermarket Volvo Fuel Tank with accessories such as brackets to strap your tank in, cap it off with senders, pickup tubes and more or protect your tank with an anti-siphon tube.