Peterson Fluid Systems Breather 1-Way Vacuum - Pop Off Valve w/ Filter and -12 AN Weld Bung Aeromotive 10 Bolt 26 spline -

10 Bolt 26 spline - Fits 1978-81 Grand National

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Peterson Fluid Systems Breather 1-Way Vacuum - Pop Off Valve w/ Filter and -12 AN Weld Bung Aeromotive 10 Bolt 26 spline -Breather assembly is installed on engine's crankcase in vacuum condition. Valve seals engine from air entering engine, but opens in the event of crankcase pressure, allowing crankcase to vent. Comes complete with 12 AN bung, to weld to aluminum valve cover, and filter. Peterson Fluid Systems is the choice of champions for wet and dry sump oiling systems. Peterson Fluid Systems offers a complete system from their class leading oil pumps to their