Cardone 54-71221 Power Brake Booster

Reliable Vacuum Power Brake Booster for Chevrolet and GMC Vehicles

The Cardone Vacuum Power Brake Booster 54-71221 is designed to restore proper brake assist in select Chevrolet and GMC trucks and SUVs. This remanufactured power brake booster features a dual diaphragm style to ensure consistent braking performance and enhanced pedal feel.

• Remanufactured power brake booster with dual diaphragm design
• Compatible with Chevrolet Jimmy, S10, S10 Blazer, S15, S15 Jimmy, and GMC Sonoma models
• Diaphragm diameter of 8.771 inches (222.78 mm) for optimal vacuum assist
• Constructed from durable steel with a gray finish
• Includes booster and instruction manual; master cylinder not included
• Master cylinder stud thread size M10x1.5 for proper fitment

Product Line: Cardone Vacuum Power Brake Booster

The Cardone Vacuum Power Brake Booster line focuses on remanufactured components engineered to meet or exceed OEM specifications. This product line emphasizes durability and reliable vacuum assist performance, making it suitable for restoring braking systems on older Chevrolet and GMC models. The 54-71221 part is a key offering within this line, providing a direct replacement for worn or faulty brake boosters.

Detailed Product Description

This power brake booster features a dual diaphragm style, which enhances the vacuum assist effect, resulting in smoother and more responsive braking. The booster’s diaphragm measures 8.771 inches (222.78 mm) in diameter, providing sufficient surface area to amplify brake pedal force. Constructed from steel and finished in gray, the booster is built to withstand the rigors of daily driving. Note that this unit does not include a master cylinder but is compatible with master cylinders using M10x1.5 stud threads.

Common Issues Addressed by This Brake Booster

• Reduced brake pedal responsiveness or increased pedal effort
• Hissing sounds indicating vacuum leaks in the brake booster
• Brake pedal sinking or inconsistent brake assist
• Loss of power assist causing longer stopping distances
• Brake system warning lights related to booster failure

Installation Notes and Tips

Ensure the vehicle is compatible with this booster by verifying make and model fitment: Chevrolet Jimmy, S10, S10 Blazer, S15, S15 Jimmy, and GMC Sonoma. Since the master cylinder is not included, inspect the existing master cylinder and replace if necessary. Follow the included instruction manual carefully to avoid vacuum leaks and ensure proper mounting. Proper torque on the M10x1.5 master cylinder studs is essential for secure installation.

Quality Assurance and Warranty

This Cardone Vacuum Power Brake Booster 54-71221 is remanufactured to meet OEM standards, ensuring reliable performance and durability. While specific warranty details are not provided, Cardone products typically come with a limited warranty covering defects in materials and workmanship. Refer to Cardone’s warranty policy for exact terms.