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Billet aluminum filler neck (1 7/16‑12 thread) from Peterson Fluid Systems is supplied in a raw finish for use with billet aluminum caps. Intended as a replacement or service neck for dry‑sump reservoir installations, the filler neck provides a threaded interface matched to Peterson cap hardware and is specified for use with their billet caps.
Peterson Fluid Systems Filler Neck Billet 1 7/16-12
