Fitment: For Chevrolet Express 1500 2003 All Engine For Chevrolet Express 2500 2004-2007 All Engine with 8600 lb Gross Vehicle Weight (GVW) For Chevrolet Express 2500 2003 All Engine For Chevrolet Express 3500 2003-2007 All Engine For GMC Savana 1500 2003 All Engine For GMC Savana 2500 2004-2007 All Engine with 8600 lb Gross Vehicle Weight (GVW) For GMC Savana 2500 2003 All Engine For GMC Savana 3500 2003-2007 All Engine Description: Type: Hydro-Boost Power Brake Booster Condition: Brand New Engine: 4.3L, 5.3L, 4.8L, 6.0L, 6.6L Quantity Sold: One Piece Color: Black Master Cylinder Stud Thread Size: M10 x 1.50 .