Raybestos MC390923 Brake Master Cylinder

Overview of Raybestos MC390923 Brake Master Cylinder

The Raybestos Element3; New brake master cylinder MC390923 is engineered for reliable brake hydraulics performance in select BMW models. Designed with precision, this aluminum master cylinder ensures consistent braking response for vehicles like the BMW 320i, 323Ci, 323i, 323is, and 325i.

• Constructed from durable aluminum for corrosion resistance and longevity
• Features 2 mounting holes with a diameter of 0.343 inches for secure installation
• Equipped with 2 ports: primary port thread M10x1 and secondary port thread M12x1
• Compatible with specific BMW models including 320i, 323Ci, 323i, 323is, and 325i
• Part number MC390923 ensures exact fit and function

Element3; New Product Line Details

The Element3; New line by Raybestos focuses on delivering brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes material quality and precise engineering, as seen in the MC390923 brake master cylinder, which uses aluminum construction and exact port threading to maintain system integrity and performance in BMW vehicles.

Detailed Product Description

The Raybestos MC390923 brake master cylinder is designed to replace the original equipment part in compatible BMW models. Its aluminum body offers enhanced resistance to corrosion and heat, which is critical for maintaining brake fluid pressure and system reliability. The master cylinder includes two mounting holes with a 0.343-inch diameter, ensuring a secure and stable fit during installation. It features two ports with specific thread sizes—M10x1 for the primary port and M12x1 for the secondary port—allowing for proper hydraulic line connections. This precise threading supports leak-free operation and consistent brake fluid flow.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure in BMW 320i, 323Ci, 323i, 323is, and 325i models
• Addresses brake pedal sinking or sponginess caused by master cylinder wear
• Eliminates brake fluid leaks from worn or damaged master cylinders
• Resolves inconsistent braking response due to internal seal failure
• Prevents brake system failure by maintaining hydraulic integrity

Installation Notes and Tips

• Ensure compatibility with your BMW model before installation
• Use proper tools to avoid damaging the aluminum body or port threads
• Bleed the brake system thoroughly after installation to remove air
• Inspect mounting holes and hardware for wear or damage prior to installation
• Follow manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

Raybestos manufactures the MC390923 brake master cylinder to meet stringent quality standards. The aluminum construction and precise port threading contribute to long-term durability and reliable brake system performance. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or Raybestos documentation for exact warranty terms.