Centric 130.34021 Brake Master Cylinder

Overview of Centric Premium Brake Master Cylinder 130.34021

The Centric Premium Brake Master Cylinder 130.34021 is engineered for reliable brake hydraulic performance in select BMW models. Designed with precision, this brake master cylinder ensures consistent braking response and durability for vehicles such as the BMW 525i, 528i, 530i, 540i, 740i, 740iL, 750iL, M5, and X5.

• Aluminum master cylinder body for strength and corrosion resistance
• Plastic removable reservoir compatible with OEM configurations
• Stepped bore design with primary bore diameter of 25 mm and secondary bore diameter of 20 mm
• Three ports with bubble flare types for primary (M10-1.00) and secondary (M12-1.00) outlets
• Includes gasket or seal for secure installation; mounting hardware not included
• Two mounting holes for proper fitment

Centric Premium Brake Master Cylinders Product Line

The Centric Premium Brake Master Cylinders line focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes durable materials such as aluminum for the master cylinder and plastic for the reservoir, ensuring long service life and reliable brake system performance. The 130.34021 part is a representative example, engineered specifically for BMW brake systems requiring precise bore sizes and port configurations.

Detailed Product Description

This Centric Premium Brake Master Cylinder 130.34021 features a stepped bore design with a primary bore diameter of 25 mm (0.984 inches) and a secondary bore diameter of 20 mm (0.787 inches), optimizing hydraulic pressure distribution. The aluminum construction provides resistance to corrosion and wear, while the plastic reservoir material is designed to be removable for maintenance or replacement. The master cylinder includes three ports with bubble flare types on both primary and secondary outlets, sized M10-1.00 and M12-1.00 respectively, ensuring compatibility with the brake lines on compatible BMW models.

Applications and Problem Solving

• Restores proper brake hydraulic pressure in BMW 525i, 528i, 530i, 540i, 740i, 740iL, 750iL, M5, and X5 models
• Replaces worn or leaking master cylinders causing brake pedal sponginess or failure
• Addresses brake fluid leaks due to damaged seals or bore wear
• Improves brake system reliability after component failure or during brake system rebuilds
• Compatible with vehicles requiring specific bore diameters and port thread sizes

Installation Notes and Tips

• Ensure brake system is properly bled after installation to remove air from hydraulic lines
• Use the included gasket or seal to prevent fluid leaks at mounting points
• Verify compatibility with your BMW model’s brake booster and reservoir setup, as this part does not include a brake booster or reservoir
• Mounting hardware is not included; retain original hardware or source appropriate replacements
• Check thread sizes (M10-1.00 primary, M12-1.00 secondary) for brake line fittings before installation

Quality Assurance and Warranty

Centric Premium Brake Master Cylinders are manufactured to meet strict quality standards, ensuring durability and performance consistent with OEM requirements. This part includes a gasket or seal for installation integrity. While mounting hardware, reservoir, brake booster, push rod, and master cylinder cap are not included, the product is designed for straightforward integration into compatible BMW brake systems. Warranty coverage details should be confirmed with the distributor or manufacturer.