The breather tube on top of your valve cover was designed to be connected by a hose to the air cleaner to facilitate Positive Crankcase Ventilation (PCV). If you change your carburetor or intake type and no longer have a place for the hose, never block the valve cover vent tube, and don't leave it without the protection of a filter. These filters are a proper fit for the valve cover vent tube, and look great while protecting your engine! See matching PCV Pipe breather in Related Items below.
For off road use only.
Datsun 240Z, 260Z, 280Z, 280ZX
Datsun S30, S130
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983