Metelli 05-0858 Brake Master Cylinder

Metelli 05-0858 Brake Master Cylinder

Metelli 05-0858 is a new brake master cylinder for BMW 7 Series applications that require a 26.99/20.64 bore and an aluminium housing. This New Master Cylinder line focuses on direct-fit hydraulic replacement parts for restoring consistent brake pedal response and system pressure.

Key Features

• Part number: 05-0858
• Brand line: New Master Cylinder
• Housing material: aluminium
• Master cylinder bore diameter: 26.99/20.64
• Reservoir included: no
• Condition: new
• Brake hydraulics replacement for BMW 745i, 745Li, 750i, 750Li, 760i, and 760Li applications

Product Details

Built for brake hydraulic service, this Metelli brake master cylinder is specified for BMW 745i and 745Li models from 2002-2005, BMW 760Li models from 2003-2008, BMW 760i models from 2004-2006, and BMW 750i and 750Li models from 2006-2008. The aluminium housing supports a lightweight, corrosion-resistant construction, while the dual bore specification of 26.99/20.64 matches the hydraulic requirements of the listed applications. Metelli 05-0858 is a practical OE-style replacement for drivers searching for a BMW 7 Series brake master cylinder, including BMW 750i brake master cylinder and BMW 760Li brake master cylinder fitment.

This part cross-references Bosch (e.g., 0 986 481 026) for the same application.

What It Helps Address

• Low or inconsistent brake pedal feel
• Internal hydraulic leakage in the master cylinder
• Brake pressure loss at the pedal
• Brake warning symptoms tied to master cylinder wear
• Restoration of proper hydraulic operation after master cylinder failure

Installation Notes

Verify bore size, reservoir configuration, and vehicle application before installation. Because the reservoir is not included, reuse or source the correct reservoir arrangement for the vehicle as needed. After installation, bleed the brake system thoroughly and inspect for leaks at all hydraulic connections. Confirm fitment for the exact BMW 745i, 745Li, 750i, 750Li, 760i, or 760Li model year before completing the repair.

Quality Assurance

Metelli supplies this part as a new brake master cylinder under the New Master Cylinder product line, with application-specific fitment for the listed BMW 7 Series vehicles.