Centric 130.34121 Brake Master Cylinder

Overview of Centric Premium Brake Master Cylinder 130.34121

The Centric Premium Brake Master Cylinder 130.34121 is engineered for reliable brake hydraulics performance in select BMW models. Designed with precision, this brake master cylinder supports consistent braking response for vehicles such as the BMW 318i, 323i, 325i, 328i, and Z3.

• Aluminum master cylinder body for durability and corrosion resistance
• Plastic removable reservoir compatible with various brake fluid types
• Stepped bore design with primary bore diameter of 0.906 inches and secondary bore diameter of 0.787 inches
• Includes gasket or seal for secure installation
• Four to five ports with M12-1.00 bubble flare outlet threads for primary and secondary outlets
• Two mounting holes for secure attachment (mounting hardware not included)

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 precision manufacturing and material selection, such as aluminum master cylinder bodies and reliable sealing components, to ensure consistent brake system performance and longevity. The 130.34121 part is a representative component within this line, tailored for specific BMW applications.

Detailed Product Description

This Centric Premium Brake Master Cylinder 130.34121 features a stepped bore design that optimizes hydraulic pressure distribution between the primary and secondary circuits. The aluminum construction provides strength and resistance to corrosion, while the plastic reservoir (sold separately) is designed to be removable for maintenance convenience. The master cylinder includes a gasket or seal to maintain system integrity and prevent fluid leaks. Both primary and secondary outlets use M12-1.00 bubble flare threads, ensuring compatibility with standard brake lines. Note that mounting hardware, brake booster, push rod, reservoir, master cylinder cap, bleeder hoses, and mounting bracket are not included with this part.

Applications and Problem Solving

• Restores proper hydraulic pressure in BMW 318i, 318is, 323i, 323is, 325i, 325is, 328i, and Z3 brake systems
• 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 responsiveness and safety
• Supports maintenance of brake hydraulics in vehicles with OEM-style components

Installation Notes and Tips

• Ensure compatibility with your specific BMW model and year before installation
• Use appropriate brake fluid and bleed the brake system thoroughly after installation
• Mounting hardware is not included; reuse OEM hardware or source compatible fasteners
• Inspect related brake components such as booster and push rod for wear during replacement
• Follow manufacturer torque specifications for mounting bolts to avoid damage

Quality Assurance and Warranty

Centric Premium Brake Master Cylinders are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part undergoes rigorous testing to comply with OEM specifications. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.