1983 Chevrolet K5 Blazer. 1984 Chevrolet K5 Blazer. 1985 Chevrolet K5 Blazer. 1986 Chevrolet K5 Blazer. Two-Way Check Valve. Vacuum Valve. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.
