NOS 15 20 lb BottleSuper Hi Flow Valve Assy w SiphonTube & BlackGauge 16340ABNOS cooling systems hardware and instructions for a Year Make Model Submodel hardware and instructions for a quick and easy installation 6L L4 1993 1995 Honda Civic del Sol 1 Bottle Size 15 lb & 20 lb Bottle Valve Super Hi Flo Brand NOS Diameter 3 8 inch Emission Code 4 Face Color Black Gauge Included Yes Gauge Type Nitrous Pressure Outlet Thread CGA #660 Product Type Bottle Valve Assembly Siphon Tube Included Yes Supported Horsepower 500+ Torque Value 100 ft lb Tube Length 22 7 8 inch Tube Material Aluminum Warning California Proposition 65 Great way to update a bottle to the best flowing valve NOS offers