What does a brake master cylinder do?

The brake master cylinder is the heart of your car's hydraulic braking system. When you press the brake pedal, it converts that force into hydraulic pressure, which then travels through the brake lines to activate your brake calipers or wheel cylinders.

What are the signs that my brake master cylinder needs replacing?

Common signs include a brake pedal that feels spongy or goes all the way to the floor, a brake warning light on your dashboard, or a noticeable drop in brake fluid level without any visible leaks elsewhere in the system.

Does this master cylinder come with brake fluid?

This DFC brake master cylinder does not include brake fluid. You will need to purchase the appropriate type of brake fluid for your Audi and fill the master cylinder reservoir after installation.

DFC 75-80 Audi 100 Brake Master Cylinder

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Specifications

Brand: DFC
Part #: 355-73029
UPC: 190920388484

DFC 75-80 Audi 100 Brake Master Cylinder

Name: DFC 75-80 Audi 100 Brake Master Cylinder
Brand: DFC
Price: 87.65 USD
Availability: InStock

$87.65

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1976-1979 Audi Fox. DFC brake master cylinder for reliable braking performance.

Key Features

Fits 1976-1979 Audi Fox, 1975-1977 Audi 100 Series, and 1980 Audi 4000.
Restores reliable braking performance.
Well-built unit designed for hydraulic pressure.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Audi 100 Series 1975-1977
Audi 4000 1980
Audi Fox 1976-1979

Product Details

If you're working on the braking system for your 1976-1979 Audi Fox, a worn-out brake master cylinder can lead to a spongy pedal and reduced stopping power. This DFC brake master cylinder is built to restore your car's braking performance, ensuring you can stop safely and confidently.

DFC makes this master cylinder to meet the original specifications for your Audi Fox. It's a well-built unit designed to handle the hydraulic pressure needed to operate your braking system effectively. Replacing a master cylinder is a common repair when you notice a soft brake pedal or if you're doing a full brake system overhaul. Make sure to bleed the brake system thoroughly after installation to remove any air and ensure proper function.