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The Peterson one‑way breather vac with weld‑in bung and filter protects engines by preventing unfiltered air from entering crankcases. The valve pops open at 2 psi to relieve pressure and includes an aluminum weld‑in bung plus a replaceable filter element. Peterson Fluid Systems supplies race‑proven oiling accessories used by performance builders and racers.
Peterson Fluid Systems Breather One-Way Vac -12AN w/ Filter
