Dynamic Friction 355-73030 Brake Master Cylinder

Brake Master Cylinder for Audi Applications

The Dynamic Friction DFC Brake Master Cylinder, part number 355-73030, is a direct-fit hydraulic brake component for select Audi models from the mid-1980s through the early 1990s. It is listed for non-ABS applications and supports accurate brake pressure transfer in the master cylinder system.

Key Features

• Brand: Dynamic Friction
• Brand line: DFC Brake Master Cylinder
• Part number: 355-73030
• Brake hydraulics replacement for select Audi brake systems
• Application-specific fitment for non-ABS vehicles
• Compatible with Audi 80, Audi 80 Quattro, Audi 90 Quattro, Audi 100, Audi 4000 Quattro, and Audi Coupe

Fitment Details

• Fits 1992 Audi 80, N/A, except ABS
• Fits 1991-1992 Audi 80 Quattro, N/A, except ABS
• Fits 1988-1992 Audi 90 Quattro, N/A, except ABS
• Fits 1990-1991 Audi 100, N/A, except ABS
• Fits 1988-1991 Audi 80, N/A
• Fits 1988-1990 Audi 80 Quattro, N/A
• Fits 1985-1987 Audi 4000 Quattro, N/A
• Fits 1986-1987 Audi Coupe, N/A
• Fits 1985 Audi Coupe, N/A, from 8/84

What This Part Is Used For

• Restoring brake pedal pressure in worn hydraulic systems
• Addressing internal master cylinder leakage
• Correcting a sinking or inconsistent brake pedal
• Replacing a failing master cylinder on non-ABS Audi brake setups
• Supporting proper brake fluid movement through the hydraulic circuit

Installation Notes and Tips

Verify ABS status before ordering, since several listed applications are for vehicles except ABS. Confirm the vehicle year, model, and brake system configuration against the fitment list, including the 1985 Audi Coupe from 8/84 note. After installation, the brake system should be properly bled and checked for leaks and pedal feel.

Quality Assurance

The DFC Brake Master Cylinder line is positioned as a dedicated brake hydraulics replacement range from Dynamic Friction for application-specific service work. Part number 355-73030 is cataloged for select Audi brake master cylinder applications.