Dorman M630075 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder M630075

The Dorman Brake Master Cylinder M630075 is engineered for reliable brake hydraulics performance in select BMW models. Designed with precision, this aluminum master cylinder supports the braking system of BMW 325Ci, 325i, 330Ci, 330i, and Z4 vehicles, ensuring consistent hydraulic pressure and control.

• Compatible with BMW 325Ci, 325i, 330Ci, 330i, and Z4 models
• Constructed from durable aluminum for corrosion resistance
• Dual bore diameters of 22mm and 23mm for precise hydraulic function
• Includes four outlets with M12 x 1.0 thread pitch for secure connections
• Does not include mounting hardware, reservoir, or sensor

Technical Specifications and Features

This brake master cylinder features dual bore diameters of 22mm and 23mm, designed to provide balanced hydraulic pressure for front and rear brake circuits. The aluminum construction offers strength and resistance to corrosion, which is critical for maintaining brake system integrity over time. The unit includes four outlets, each with an M12 x 1.0 thread pitch, facilitating secure and leak-free brake line connections. Note that the package contains the master cylinder only, without mounting hardware, reservoir, or sensor components.

Applications and Problem Resolution

The Dorman M630075 brake master cylinder is intended for use in the brake hydraulic system of specific BMW models. It addresses several common brake system issues, including:

• Loss of brake pedal pressure or spongy brake feel
• Brake fluid leaks from a worn or damaged master cylinder
• Uneven braking performance due to master cylinder bore wear
• Brake warning light activation related to hydraulic pressure faults
• Replacement of a failing or corroded original master cylinder

Installation Notes and Tips

Installation of the Dorman M630075 requires careful attention to brake system bleeding procedures to remove air and ensure proper hydraulic function. Since mounting hardware and reservoir are not included, reuse of existing components or separate purchase may be necessary. Verify thread compatibility with brake lines before installation. It is recommended to inspect all brake system components during replacement to maintain overall system safety and performance.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction supports durability and corrosion resistance. While specific warranty details should be confirmed at the point of purchase, Dorman typically offers limited warranties covering defects in materials and workmanship to provide confidence in product reliability.