SKP SKM630203 Brake Master Cylinder

Brake Master Cylinder for Porsche, Audi, and Volkswagen

The SKP Brake Master Cylinder, part number SKM630203, restores hydraulic pressure transfer from the brake pedal to the brake system. Built to OE specifications with durable materials, it is a direct-fit replacement for select Porsche 911 and Boxster, Audi A4 and A6, and Volkswagen Passat applications.

This part cross-references Dorman - First Stop M630203 for the same application.

Key Features

• Brake master cylinder for hydraulic brake system operation
• OE-spec fitment for select Porsche, Audi, and Volkswagen models
• 23 mm bore size on listed applications
• Direct replacement for restored pedal response and brake control
• SKP part number SKM630203 for easy identification

Detailed Description

SKP SKM630203 is a brake master cylinder engineered for vehicles that require a 23 mm bore and no stability control on the listed Porsche applications. It is also listed for Audi A4, A4 Quattro, A6, A6 Quattro, and Volkswagen Passat models with matching fitment details. If you are replacing a worn master cylinder on a Porsche 911, Porsche Boxster, Audi A4, or Audi A6, this unit provides the hydraulic function needed for consistent braking performance.

What It Helps Fix

• Low or inconsistent brake pedal response
• Internal hydraulic leakage in the master cylinder
• Brake pedal travel that feels excessive or soft
• Loss of braking control caused by worn hydraulic components
• Brake warning symptoms tied to master cylinder wear

Installation Notes and Tips

• Verify bore size and vehicle configuration before ordering.
• Confirm fitment for your exact year, make, and model, including stability control notes where listed.
• Bleed the brake system after installation to remove trapped air.
• Inspect brake lines, fluid condition, and related hydraulic components during replacement.

Quality Assurance

SKP manufactures this master cylinder to meet OE specifications for fit and function. The SKM630203 part number helps confirm the correct replacement for the listed Porsche, Audi, and Volkswagen applications.