TRW PSA920 Power Brake Booster

Reliable Power Brake Booster for BMW Models

The TRW PSA920 power brake booster is designed as a standard replacement part for various BMW vehicles. Engineered with a durable steel housing and a dual diaphragm system, this vacuum booster ensures consistent brake assist performance for models like the BMW 525i, 530i, and M5.

• Standard replacement brake service grade
• Vacuum booster type for efficient brake assist
• Steel housing with a 245 mm diameter for durability
• Dual diaphragm design with 245 mm diameter for reliable operation
• Includes gasket and neck seal for proper installation
• Compatible with multiple BMW models including 525i, 528i xDrive, 535i, 645Ci, and M6

Product Details and Specifications

The TRW PSA920 power brake booster features a robust steel housing measuring 245 mm in diameter, providing strength and resistance to wear. Its dual diaphragm design enhances vacuum efficiency, delivering consistent brake pedal feel and assist. This booster does not include a master cylinder, brake pedal rod extension, mounting hardware, or mounting bracket, but it does come with essential seals and gaskets to ensure a proper fit and prevent vacuum leaks. The vacuum booster is engineered specifically for BMW models such as the 525xi, 528i, 535xi, 550i, and M6, making it a precise replacement part for maintaining brake system performance.

Compatible BMW Models and Applications

• BMW 525i, 525xi, 528i, 528i xDrive, 528xi
• BMW 530i, 530xi, 535i, 535i xDrive, 535xi
• BMW 545i, 550i, 645Ci, 650i
• BMW M5 and M6

Common Brake Issues Addressed

• Reduced brake pedal responsiveness or hard pedal feel
• Loss of vacuum assist causing increased stopping distance
• Brake pedal sinking or inconsistent brake pressure
• Vacuum leaks leading to engine performance issues
• Wear or damage to the brake booster diaphragm

Installation Notes and Tips

When installing the TRW PSA920 power brake booster, ensure all vacuum lines are properly connected and free of cracks or damage. Use the included gasket and neck seal to prevent vacuum leaks. Since mounting hardware and master cylinder are not included, retain original components or source separately if needed. Verify compatibility with your specific BMW model and engine configuration before installation to ensure proper fit and function.

Quality Assurance and Warranty

TRW manufactures the PSA920 power brake booster to meet standard brake service grade specifications, ensuring reliable performance and durability. The product includes essential seals to maintain vacuum integrity. While specific warranty details are not provided, TRW products typically adhere to industry quality standards for replacement brake components.