Reproduction Of Original For V8 Or 6 Cylinder Chevelles The PCV (positive crankcase ventilation) system is important for siphoning blow-by vapors that end up in your engine?s crankcase and routing them into the intake manifold so they can be re-burned in the engine. The PCV valve specifically is a spring-loaded valve designed to restrict air that is siphoned, and is important for your 1965, 1966, 1967, 1968, 1969, 1970, 1971, or 1972 Chevelle because a broken or wrong sized valve can flow too much or too little air, causing many drivability problems. Make sure that you keep up with your valve to ensure that it is not clogged.
| Make | Model | Years |
| Chevrolet | Chevelle | 1965 - 1972 |
| Chevrolet | Estate | 1969 - 1970 |
| Chevrolet | Malibu | 1965 - 1967 |
