Cardone 54-71901 Power Brake Booster

Vacuum Power Brake Booster for Ford and Mercury

The Cardone 54-71901 vacuum power brake booster is a remanufactured replacement built to restore brake assist and pedal response. It is engineered and tested to match original equipment performance for select Ford Explorer, Explorer Sport Trac, Explorer Sport, and Mercury Mountaineer applications.

Cardone’s Vacuum Power Brake Booster line focuses on remanufactured OE-style fitment with tested function, pre-adjusted output rods when included, and a corrosion-resistant finish for added durability.

Key Features

• Remanufactured to match original equipment performance
• Dual-diaphragm design for vacuum-assisted braking support
• Steel construction with gray finish
• 100% tested for fit and function
• OE-quality seals and check valves installed on every unit
• Rust-prohibitive finishing process helps extend service life
• Master cylinder output rods are pre-adjusted when included
• Package includes booster and instruction manual

Detailed Description

This Cardone Vacuum Power Brake Booster, part number 54-71901, is a remanufactured brake booster designed for vehicles that use a vacuum-assisted braking system and do not include a master cylinder with the booster assembly. It uses a dual diaphragm with a 9.672-inch diameter and is built from steel for OE-style fitment and function. The unit is remanufactured, fully tested, and finished in gray.

Fits 2001-2005 Ford Explorer Sport Trac, N/A; Fits 2001-2003 Ford Explorer Sport, N/A; Fits 1999-2001 Ford Explorer, N/A, except right hand drive and without master cylinder; Fits 1999-2001 Mercury Mountaineer, N/A. This part cross-references Ford and Mercury OE numbers for the same application. The Cardone 54-71901 is a direct-fit brake booster replacement for select Ford Explorer and Mercury Mountaineer platforms.

What It Helps Fix

• Hard brake pedal feel from a weak or failed booster
• Reduced brake assist during normal stopping
• Vacuum leak symptoms related to booster failure
• Brake pedal effort that has increased over time
• Fitment issues when replacing an OE-style vacuum brake booster

Installation Notes and Tips

Verify that the vehicle is equipped for a vacuum power brake booster and does not use a master cylinder included with the assembly. Confirm application details for year, model, and the right-hand-drive exclusion on 1999-2001 Ford Explorer before installation. Follow the included instruction manual and inspect vacuum connections, pushrod alignment, and mounting surfaces during replacement.

Quality Assurance

Cardone remanufactures this booster to OE performance standards and tests every unit for fit and function before release. The design also includes OE-quality seals and check valves, along with a rust-prohibitive finish to support long-term service.