Additional fuel tank. Used in motorsport, allows for a continuous supply of fuel even during high overloads. The tank is made entirely of polished aluminum. Capacity: 4L. Connections: AN6 The product is not road approved. It is designed for use in motorsports, tuning exhibitions and other.Additional fuel tank.Used in motorsport, it allows continuous fuel delivery even during heavy overloads.The tank is made entirely of polished aluminum.Capacity: 4L.AN6 fittings. Additional fuel tank. Used in motorsport, allows for a continuous supply of fuel even during high overloads. The tank is made entirely of polished aluminum. Capacity: 4L. Connections: AN6