Vacuum Brake Booster Assembly for Chevy S10 1988-1993/S10 Blazer 1988-94 5471048

For Chevrolet S10 Blazer 1988-1993 with Brake Code JM3; with Booster Stamped ST. For Chevrolet S10 1988-1993 with Brake Code JM3; with Booster Stamped ST. For Chevrolet S10 Blazer 1994 Manual trans. For GMC Jimmy 1992-1993 with Brake Code JM3; with Booster Stamped ST.