ACDelco 85762161 Brake Master Cylinder and Power Brake Booster Assembly

The ACDelco 85762161 is a complete brake master cylinder assembly with integrated power brake booster and electronic brake control. Engineered as a direct OE replacement, this assembly restores full hydraulic braking performance and power-assisted stopping capability to your vehicle.

This assembly combines the master cylinder and brake booster into a single, ready-to-install unit — eliminating the need for separate component sourcing and reducing installation complexity. It is built to ACDelco's OE standards and is designed for a precise fit, form, and function match to the original equipment.

Key Features:

• Complete assembly — includes brake master cylinder, power brake booster, and electronic brake components
• OE-quality construction using cast iron and aluminum specifications for durability without added stress on the brake booster mounting
• EPDM and SBR rubber components provide superior resistance to heat, corrosion, and fluid leakage
• Pressure tested prior to shipment to ensure safe and confident braking performance
• Meets SAE J1153 and J1154 brake performance test requirements
• Precision geometric tolerances ensure proper fit between the cylinder body and fluid reservoir
• Piston assembly and return spring design helps prevent brake drag and premature brake pad wear
• Ready to bench bleed and install — no additional assembly required

The ACDelco 85762161 is the correct solution when restoring braking system integrity on vehicles equipped with a combined master cylinder, power booster, and electronic brake control unit. As an ACDelco part, it is backed by General Motors engineering standards and quality assurance.