Moroso lifter valley vents are a hardware pack of eight 1/4-inch NPT aluminum vents with hex heads. Supplied as an eight-pack, these vents allow controlled crankcase ventilation or porting in lifter valley areas where NPT fittings are needed. They provide a neat, serviceable finishing hardware option for engines requiring multiple valley vent points.
Moroso Lifter Valley Vents - 1/4in NPT w/Hex Head - Aluminum - 8 Pack