Sierra 116-337-0380 38 Low Perm Fuel Line Sierra fuel hoses are OEM compatible. This low perm fuel hose has a small outer diameter making it flexible and easy to clamp. This outboard fuel line is resistant to ethanol blended fuel and a THV barrier to prevent permeation. This B1 fuel line is both EPA and CARB complaint. The fuel hose is gray in color to help keep it cooler and prevent vapor lock. This hose is for above deck primer bulb application and is not fire retardant. Replaces Moeller 03437