What does a brake master cylinder do?

The master cylinder converts the mechanical force from your brake pedal into hydraulic pressure. This pressure then travels through the brake lines to activate your brakes, slowing or stopping the vehicle.

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 when pressed, a gradual loss of braking ability, or 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 and amount of brake fluid separately and bleed the system after installation.

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Specifications

Brand: DFC
Part #: 355-31027
UPC: 190920375057

DFC 11-18 BMW X3 Brake Master Cylinder

Name: DFC 11-18 BMW X3 Brake Master Cylinder
Brand: DFC
Price: 157.08 USD
Availability: InStock

$157.08

Only 3 left in stock

Fits 2011-2017 BMW X3 and 2015-2018 BMW X4. This DFC brake master cylinder is a direct replacement to restore proper braking performance.

Key Features

Fits 2011-2017 BMW X3 and 2015-2018 BMW X4.
Features a durable cast iron housing for reliable performance.
Designed as a direct-fit replacement for straightforward installation.
Restores proper hydraulic pressure for effective braking.
Helps resolve issues like a spongy brake pedal or reduced stopping power.

⚠️ 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 X3 2011-2017
BMW X4 2015-2018

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 be a direct replacement for your 2011-2017 BMW X3 or 2015-2018 BMW X4, meaning it should install without needing any modifications to your existing brake lines or mounting points.

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 your brake pads against the rotors. If your pedal feels spongy, goes to the floor, or you're experiencing inconsistent braking, replacing the master cylinder is often the solution. This DFC unit aims to bring that critical hydraulic function back to spec, helping you regain confidence in your vehicle's stopping power.

When installing a new master cylinder, it's important to properly bleed the brake system afterward to remove any air. This ensures that the hydraulic pressure is consistent and effective. Always refer to your vehicle's service manual for the correct bleeding procedure.