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These Moroso valve cover breathers are made for COPO valve covers and accept 3/4-inch hose connections. Supplied as valve cover-mounted breathers, they are intended to provide a serviceable connection point for crankcase ventilation plumbing that uses 3/4-inch hose, offering a direct-fit breathing solution for compatible Moroso COPO valve covers.
Moroso COPO 3/4in Hose Valve Cover Breathers
