Cardone 54-71921 Power Brake Booster

Reliable Vacuum Power Brake Booster for Ford Explorer and Mercury Mountaineer

The Cardone Vacuum Power Brake Booster 54-71921 is designed to restore proper brake function in select Ford and Mercury SUVs. This remanufactured power brake booster offers a durable steel construction and a dual diaphragm design to ensure consistent braking performance for your Explorer or Mountaineer.

Key Features of Cardone Power Brake Booster 54-71921

• Dual brake booster diaphragm style for enhanced vacuum assistance
• Diaphragm diameter of 9.56 inches (242.824 mm) for optimal brake response
• Constructed from durable steel material for long-lasting use
• Gray color finish for corrosion resistance and easy identification
• Includes booster, instruction manual, and master cylinder neck seal
• Compatible with Ford Explorer and Mercury Mountaineer models
• Master cylinder stud thread size M8 x 1.25 for proper fitment
• Remanufactured product condition meeting OEM specifications
• E-waste compliant for responsible disposal

About the Cardone Vacuum Power Brake Booster Product Line

The Vacuum Power Brake Booster line from Cardone focuses on remanufactured components that restore brake system efficiency by providing reliable vacuum assistance. This product line emphasizes quality materials and precise diaphragm sizing to ensure consistent brake pedal feel and stopping power. The 54-71921 model fits within this line, offering a direct replacement solution for Ford Explorer and Mercury Mountaineer vehicles requiring a dependable power brake booster.

Detailed Product Description

This Cardone power brake booster features a dual diaphragm design with a 9.56-inch diameter, providing balanced vacuum pressure to assist braking effort. The steel construction enhances durability and resistance to wear, while the gray finish helps protect against corrosion. The booster does not include a master cylinder but is compatible with master cylinders using an M8 x 1.25 stud thread size. Included in the package are the booster itself, an instruction manual for installation guidance, and a master cylinder neck seal to ensure a proper seal and prevent leaks.

Common Brake Issues Addressed by This Booster

• Reduced brake pedal responsiveness or increased pedal effort
• Hissing sounds indicating vacuum leaks in the brake booster
• Brake warning light activation due to booster failure
• Inconsistent or spongy brake pedal feel
• Loss of power assist causing unsafe braking conditions

Installation Notes and Tips

• Ensure compatibility with Ford Explorer and Mercury Mountaineer models before installation
• Follow the included instruction manual carefully for proper mounting and connection
• Check master cylinder stud thread size (M8 x 1.25) for correct fit
• Inspect vacuum lines for leaks and replace if necessary during installation
• Bleed the brake system after installation to remove air and restore brake performance

Quality Assurance and Warranty Information

This Cardone Vacuum Power Brake Booster 54-71921 is a remanufactured product that meets or exceeds OEM standards for fit, form, and function. Cardone remanufacturing processes include rigorous testing to ensure reliability and performance. The product is E-waste compliant, supporting environmentally responsible disposal. Warranty details are provided by Cardone and typically cover defects in materials and workmanship under normal use.