What does a brake master cylinder do?

The master cylinder converts the mechanical force from your brake pedal into hydraulic pressure. This pressure is then sent through the brake lines to actuate the brake calipers or wheel cylinders, slowing your vehicle.

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

Common signs include a spongy or soft brake pedal, the brake pedal sinking to the floor, or a noticeable drop in brake fluid level without any external leaks. You might also experience inconsistent braking performance.

Does this master cylinder come with brake fluid?

This part is the master cylinder unit itself. You will need to purchase and add the appropriate type and amount of brake fluid separately after installation.

DFC 78-81 Buick Riviera Brake Master Cylinder

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Specifications

Brand: DFC
Part #: 355-45003
UPC: 190920377303

DFC 78-81 Buick Riviera Brake Master Cylinder

Name: DFC 78-81 Buick Riviera Brake Master Cylinder
Brand: DFC
Price: 50.73 USD
Availability: InStock

$50.73

Only 9 left in stock

DFC brake master cylinder for 1979-1981 Buick Riviera and many other vehicles. Ensures reliable braking performance.

Key Features

Fits 1979-1981 Buick Riviera, 1979-1981 Cadillac Eldorado, 1979-1981 Oldsmobile Toronado, and many other vehicles.
Replaces the original brake master cylinder.
Converts pedal force into hydraulic pressure for braking.
Designed to meet original equipment specifications.
Essential for proper hydraulic brake system function.

⚠️ 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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Will this fit your vehicle?

Product Details

DFC is known for making dependable replacement parts, and this brake master cylinder is no exception. If you're working on a 1979 through 1981 Buick Riviera, or a similar vehicle from that era like a Cadillac Eldorado or Oldsmobile Toronado, this part is designed to get your braking system back in solid working order. The master cylinder is the heart of your car's hydraulic braking system; it converts the force from your brake pedal into hydraulic pressure that pushes the brake pads or shoes against the rotors or drums.

This unit is built to meet the original specifications for the vehicles it fits, meaning it should install without issue and function just like the factory part. A properly functioning master cylinder is crucial for consistent and safe stopping power. If you've noticed a spongy brake pedal, or if your brake fluid level is dropping without any visible leaks, it might be time to replace your master cylinder.