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The Nitrous Express 4AN red B-nut (qty 1) is a replacement fastening nut for 4AN swivel fittings, finished in red for identification or aesthetic matching. Supplied as a single unit, it secures AN connections in fuel, nitrous, or fluid plumbing assemblies and serves as a service part for repair or system builds where a 4AN B-nut is required.
Nitrous Express 4AN Red B-Nut (Qty 1)
