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Billet aluminum cap and neck assembly (3 in., 12‑thread) from Peterson Fluid Systems includes cap, neck and O‑ring. The cap is black anodized while the neck is left raw in finish, providing a matched threaded filler assembly for dry‑sump or drag tank applications that require a 3‑inch threaded filler interface and the supplied O‑ring for sealing.
Peterson Fluid Systems Cap & Neck Assembly Billet
