ACDelco 84570250 GM Genuine Parts Brake Master Cylinder with Power Brake Booster and Electronic Brake Control Module

The ACDelco 84570250 is a GM Genuine Parts complete brake assembly combining a brake master cylinder, power brake booster, and electronic brake control module (EBCM) into a single integrated unit. Designed, engineered, and tested to rigorous OEM standards, this assembly is backed by General Motors and delivers factory-level braking performance.

The power brake booster and master cylinder work together as a system: the booster multiplies pedal force to reduce driver effort, while the master cylinder pressurizes brake fluid through the lines to clamp the brake pads against the rotors. The integrated EBCM manages electronic brake functions, ensuring seamless communication with the vehicle's safety systems.

Key Features:

• Complete integrated assembly — master cylinder, power brake booster, and electronic brake control module included
• Reduces required brake pedal pressure for confident, controlled stops
• Designed and validated by GM engineers to OEM specifications for fit, form, and function
• Compatible with GM vehicle safety and electronic braking systems
• Helps restore original brake power and pedal feel
• True GM Genuine Part — not a rebranded or aftermarket substitute
• GM Part #84570250 / ACDelco Part #84570250

⚠️ California Proposition 65 Warning: This product can expose you to chemicals including those known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.