What does a brake master cylinder do?

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

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

Common signs include a brake pedal that feels spongy or goes to the floor, a noticeable decrease in stopping power, or visible brake fluid leaks around the master cylinder itself.

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 BMW separately and ensure the system is properly bled after installation.

DFC 01-08 BMW 325Ci Brake Master Cylinder

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Specifications

Brand: DFC
Part #: 355-31053
UPC: 190920375316

DFC 01-08 BMW 325Ci Brake Master Cylinder

Name: DFC 01-08 BMW 325Ci Brake Master Cylinder
Brand: DFC
Price: 159.00 USD
Availability: InStock

$159.00

On Backorder

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

Fits 2003-2008 BMW Z4. This DFC brake master cylinder is a direct replacement for your original part, ensuring reliable stopping power.

Key Features

Fits 2003-2008 BMW Z4 and 2002-2006 BMW 325Ci.
Features a durable cast iron housing for strength and longevity.
Direct replacement for the original brake master cylinder.
Restores proper hydraulic pressure for reliable braking.
Meets original equipment specifications for a precise fit.

⚠️ 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

BMW 325Ci 2002-2006
BMW Z4 2003-2008

Product Details

This DFC brake master cylinder is built with a cast iron housing, a material known for its strength and durability under pressure. It's designed to replace the original master cylinder on your 2003-2008 BMW Z4, and also fits the 2002-2006 BMW 325Ci. A properly functioning master cylinder is crucial for your braking system; it's the component that converts the force you apply to the brake pedal into hydraulic pressure that pushes the brake pads against the rotors.

When your original master cylinder starts to wear out, you might notice a spongy brake pedal, a longer stopping distance, or even brake fluid leaks. This DFC unit is made to meet the original equipment specifications, meaning it should install without issue and restore your braking performance. Having a solid master cylinder ensures that the hydraulic pressure is consistent and reliable every time you press the brake pedal, which is essential for safe driving.

This part is a direct replacement, so you won't need any special modifications for installation. Just be sure to properly bleed the brake system after installation to remove any air and ensure optimal performance.