Valve cover grommet, also known as a positive crankcase ventilation grommet.
Dimensions: 0.486" ID x 1.071" OD x 1.248" Thickness
Fits the following Pontiac vehicles equipped with 260/307/350/403 c.i.d Oldsmobile engines:
Bonneville 1977-81
Catalina 1977-81
Firebird 1977-79
Grand LeMans 1976-77
Grand Prix 1977
Grand Safari 1977-78
LeMans 1976-77
Parisienne 1986
Phoenix 1977
Safari 1987-89
Ventura 1975-77