| Crankcase pressure has long been considered detrimental to engine performance and gasket sealing. As pressures increase through performance and age gaskets often begin to leak. By venting the crankcase to atmosphere those pressures are greatly reduced. Metco valve cover breathers are CNC machined from 6061-T6 aircraft grade aluminum. Other features include:
? Positive filter engagement, will not blow out as crankcase pressure increases, yet easily removed.
Fits OEM valve covers with no modifications, easy to install.
Cotton pleated chrome-topped filter, washable.
Polished to "Show-Quality" lustre.
Includes high quality seals for leak free engagement. | 
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