URO 34311113656 Brake Master Cylinder
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URO

URO 34311113656 Brake Master Cylinder

Brand URO 34311113656
Fits —

OE dimensions. Precisely manufactured for proper clearances and performance.

EPDM piston seals. Resist corrosive glycol-based brake fluid.

Alloy aluminum or cast iron construction. Built for long-term durability.

Cross-references URO 34311113656, 34 31 1 113 656 and 537 06001 237 for the same application. See all 4.

$117.35Free shipping
In stock · usually ships same day before 1pm CST
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Brake Master Cylinder for OE-Style Repair

This URO brake master cylinder is built for direct replacement service when the original unit begins to leak or lose hydraulic pressure. It is manufactured to OE dimensions for proper clearance and performance, making it a practical choice for BMW 3 Series brake master cylinder replacement and other BMW brake hydraulics repairs.

  • Direct-fit brake master cylinder for OE-style replacement
  • Precision-built to OE dimensions for correct fit and pedal response
  • EPDM piston seals resist glycol-based brake fluid
  • Aluminum or cast iron cylinder construction for durability
  • Quality control checks throughout production
  • 24 Month Unlimited Mileage Warranty

Detailed Product Overview

Part number 34311113656 is a brake master cylinder from URO designed to restore hydraulic function in the brake system. A worn or leaking master cylinder can reduce braking performance and allow brake fluid to damage carpeting or surrounding components. This replacement is intended for BMW 3 Series applications that require part number 34311113656, with fitment-specific use confirmed by the vehicle catalog.

This part cross-references URO (e.g., URO-002569) for the same application.

What It Helps Fix

  • Brake fluid leakage at the master cylinder
  • Soft or inconsistent brake pedal feel
  • Loss of hydraulic pressure in the brake system
  • Brake fluid contamination of nearby components
  • Brake performance issues tied to internal seal wear

Installation Notes and Tips

Before installation, verify the vehicle application against the catalog listing for your BMW 3 Series and confirm part number 34311113656 matches the original unit. After installation, the brake system should be bled thoroughly to remove trapped air and restore proper pedal feel. Inspect the brake lines, reservoir connection, and surrounding hydraulic components for leaks or wear before returning the vehicle to service.

Quality Assurance

URO Parts manufactures this master cylinder to OE dimensions and uses EPDM piston seals for compatibility with glycol-based brake fluid. Production includes quality control at each step, and the part is backed by a 24 Month Unlimited Mileage Warranty.

Related reading

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
URO — 3431111365634 31 1 113 656537 06001 237URO-002569