4AN Bottle Nut w/Washer

One Piece Design:
1-piece bottle nut that is sealed with the supplied Teflon gasket.

Application:
The bottle nut fits our 5, 10, 15 and 20LB high flow and super high flow valves. The 660 style bottle valves are used by most nitrous companies such as NOS, Edelbrock, Speedtech.