The Vacuum Power Brake Booster 54-74402 by Carquest is a high-quality brake booster designed specifically for 1992-1996 Ford E-150 and E-250 Econoline vehicles. Made of durable steel material, this brake booster features a diaphragm diameter of 10.78 inches and a housing diameter of 10.97 inches. It includes the booster unit and an instruction sheet for easy installation. With a manufacturer warranty of 5 years and being manufactured in the United States, this brake booster ensures reliable performance and safety for your vehicle.