Cardone
Vacuum Power Brake Booster

Cardone 54-74306 Power Brake Booster

Brand Cardone 54-74306
Brake Booster Diaphragm Style Single
Color Gray
Diaphragm Diameter (in) 11.477
Diaphragm Diameter (mm) 291.5158
E-Waste No
Master Cylinder Included No
Material Steel
Package Contents Booster; Instruction Manual
Product Condition Remanufactured
Product line Vacuum Power Brake Booster
Fits Ford and Mercury · 2 vehicles

Remanufactured to match O.E. performance. Built and tested for reliable, like-new function.

Rust-prohibitive finish. Helps extend the life of the steel housing.

Single-diaphragm design. Supports consistent brake assist performance.

Cross-references Ford E9SZ2005A and Mercury E9SZ2005A for the same application. See all 2.

$108.85Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $108.85
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Vacuum Power Brake Booster for 1989 Ford Thunderbird and Mercury Cougar

Restore brake assist with this Cardone remanufactured vacuum power brake booster, part number 54-74306. It is built to match original equipment performance and tested for fit and function, making it a direct replacement for select 1989 Ford Thunderbird and Mercury Cougar applications.

Key Features

  • Remanufactured to match O.E. performance
  • 100% tested for reliable fit and function
  • Single-diaphragm design with an 11.477 in. diaphragm diameter
  • Steel construction with gray finish
  • 100% O.E. quality seals and check valves installed for consistent operation
  • Rust-prohibitive finishing process helps extend service life
  • Master cylinder output rods are pre-adjusted when included for easier installation
  • Guaranteed fit and function

Product Details

Cardone Vacuum Power Brake Booster 54-74306 is part of the Cardone remanufactured brake booster line, which focuses on rebuilding original units to OE-level performance standards. Each booster is re-engineered, inspected for design improvements where applicable, and tested before release. This approach supports dependable brake pedal assist for drivers servicing a 1989 Ford Thunderbird or 1989 Mercury Cougar with a vacuum power brake booster setup.

This part cross-references Ford E9SZ2005A for the same application.

What It Helps Solve

  • Hard brake pedal feel caused by weak vacuum assist
  • Reduced braking assist during normal pedal application
  • Brake booster leakage that affects pedal response
  • Fitment issues when replacing a worn OE booster
  • Corrosion-related booster deterioration

Installation Notes and Tips

Compatible With 1989 Ford Thunderbird, N/A, and 1989 Mercury Cougar, N/A. Verify that the vehicle uses a vacuum power brake booster and does not require a master cylinder with the replacement. The booster ships with an instruction manual, and the pre-adjusted output rod feature helps streamline installation when applicable. Confirm all vacuum connections, mounting points, and pedal linkage alignment before returning the vehicle to service.

Quality Assurance

Cardone remanufactured power brake boosters are 100% tested to confirm proper operation, fit, and function. The unit is re-engineered from original designs and may include durability updates intended to improve service life over the original part.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1989FordThunderbirdN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
1989MercuryCougarN/AFits vehicles lacking master cylinders.; Vacuum Power Brake Booster
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Ford — E9SZ2005AMercury — E9SZ2005A