OE Quality
60-Day Returns

Cardone 54-77121 Power Brake Booster
Reliable Vacuum Power Brake Booster for Ford Fusion and Mercury Milan
The Cardone Vacuum Power Brake Booster 54-77121 is designed to restore proper brake assist performance in select Ford and Mercury vehicles. Engineered with a durable steel construction and a single diaphragm design, this remanufactured booster ensures consistent braking response for your Fusion or Milan.
Key Features of Cardone 54-77121 Brake Booster
- Compatible with Ford Fusion and Mercury Milan models
- Single diaphragm style with a 10.325-inch (262.255 mm) diameter for effective vacuum assist
- Constructed from steel for strength and durability
- Gray finish for corrosion resistance
- Includes booster, instruction manual, and master cylinder neck seal
- Master cylinder stud thread size: M8 x 1.25
- Remanufactured product condition meeting OEM specifications
About the Cardone Vacuum Power Brake Booster Line
The Vacuum Power Brake Booster line by Cardone focuses on remanufactured components that provide reliable vacuum-assisted braking performance. This product line is engineered to meet or exceed original equipment standards, offering a cost-effective solution for restoring brake system function in compatible vehicles such as the Ford Fusion and Mercury Milan.
Product Description and Specifications
This Cardone power brake booster features a single diaphragm design with a diameter of 10.325 inches (262.255 mm), optimized for vacuum power assist. The steel construction ensures structural integrity and long service life. The gray color finish helps resist corrosion and wear. This booster does not include a master cylinder but is designed to interface with master cylinders using an M8 x 1.25 stud thread size. The package includes the booster unit, an instruction manual for installation guidance, and a master cylinder neck seal to maintain system integrity.
Common Brake Issues Addressed by This Booster
- Reduced brake pedal assist causing increased pedal effort
- Spongy or hard brake pedal feel due to vacuum loss
- Brake system vacuum leaks affecting stopping power
- Delayed brake response or inconsistent pedal travel
- Wear or damage to original brake booster components
Installation Notes and Tips
Ensure compatibility with your specific Ford Fusion or Mercury Milan model before installation. Follow the included instruction manual carefully to avoid vacuum leaks and ensure proper mounting. Verify the master cylinder stud thread size (M8 x 1.25) matches your vehicle’s master cylinder. It is recommended to inspect related brake system components during installation for optimal performance.
Quality Assurance and Warranty
This Cardone Vacuum Power Brake Booster 54-77121 is a remanufactured product that meets industry standards for quality and reliability. Cardone remanufactured parts undergo rigorous testing to ensure functionality and durability. Warranty coverage details should be confirmed with the distributor or installer.
| Brand | Cardone |
| Part Number | 54-77121 |
| Position | Vacuum Power Brake Booster |
| Brake Booster Diaphragm Style | Single |
| Color | Gray |
| Diaphragm Diameter (in) | 10.325 |
| Diaphragm Diameter (mm) | 262.255 |
| E-Waste | No |
| Master Cylinder Included | No |
| Master Cylinder Stud Thread Size | M8 x 1.25 |
| Material | Steel |
| Package Contents | Booster; instruction manual; m/c neck seal |
| Product Condition | Remanufactured |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Submodel | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Ford | Fusion | Sport | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2012 | Ford | Fusion | SE | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2012 | Ford | Fusion | SEL | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2012 | Ford | Fusion | S | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2011 | Ford | Fusion | Sport | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2011 | Ford | Fusion | SE | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2011 | Ford | Fusion | SEL | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2011 | Ford | Fusion | S | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2011 | Mercury | Milan | Premier | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2010 | Ford | Fusion | Sport | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2010 | Ford | Fusion | SE | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2010 | Ford | Fusion | SEL | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2010 | Ford | Fusion | S | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
| 2010 | Mercury | Milan | Premier | FWD | N/A | Fits vehicles lacking master cylinders.; Vacuum Power Brake Booster |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.