Intake manifold grommet for PCV valve also known as positive crankcase ventilation.
Dimensions: 0.418" ID x 1.299" OD x 0.5" Thickness
Fits the following Chevrolet vehicles equipped with Buick engines:
Camaro 1980-1981
Caprice 1980-1984
Elcamino 1978-1984
Impala 1980-1985
Malibu 1978-1983
Monte Carlo 1978-1985
Monza 1978-1980