Vacuum Power Brake Booster for Chevy Blazer C10 C20 C30 K10 K20 K30 K5 Blazer. K20 Suburban 1974-1980 All Engine Fits with Brake Code JB5 or JB6 or JB7. K20 Suburban 1973 All Engine. C20 Suburban 1974-1980 All Engine Fits with Brake Code JB5 or JB6 or JB7.
