Specifics and features: Condition: Brand New Warranty: 1 Year Item Type: Power Brake Booster Color: Black Material: Steel Master Cylinder Stud Thread Size: M10 x 1.5 Note: Without Master Cylinder OE Number: 54-71008, 5471008, 18003678, 18003681, 18003686, 18005029, 18005040, 18005055 Compatible with: For Chevrolet Blazer 1974 All Engine with Dual Diaphragm Booster For Chevrolet C10 1975-1977 All Engine with Brake Code JB5 For Chevrolet C10 1978-1980 All Engine Petrol, with Brake Code JB5 For Chevrolet C10 Pickup1974 All Engine with Brake Code JB5 For Chevrolet C10 Suburban1973 All Engine .